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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Jan. 31, 2019	Mar. 31, 2019	Jul. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	OOMA
Entity Registrant Name	Ooma Inc
Entity Central Index Key	0001327688
Current Fiscal Year End Date	--01-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,600,000
Entity Public Float			$ 295

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Current assets:
Cash and cash equivalents	$ 15,370	$ 4,483
Short-term investments	27,253	47,307
Accounts receivable, net	3,723	2,858
Inventories	10,117	6,079
Other current assets	5,450	4,397
Total current assets	61,913	65,124
Property and equipment, net	4,563	4,732
Intangible assets, net	2,635	1,292
Goodwill	3,898	1,947
Other assets	5,379	336
Total assets	78,388	73,431
Current liabilities:
Accounts payable	10,231	5,453
Accrued expenses	19,048	14,777
Deferred revenue	15,443	15,556
Total current liabilities	44,722	35,786
Other liabilities	619	577
Total liabilities	45,341	36,363
Commitments and contingencies (Note 11)
Stockholders’ equity:
Preferred stock $0.0001 par value: 10 million shares authorized; none issued and outstanding
Common stock $0.0001 par value: 100 million shares authorized; 20.3 million and 19.1 million shares issued and outstanding, respectively	4	2
Additional paid-in capital	138,848	128,081
Accumulated other comprehensive loss	(10)	(84)
Accumulated deficit	(105,795)	(90,931)
Total stockholders’ equity	33,047	37,068
Total liabilities and stockholders’ equity	$ 78,388	$ 73,431

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jan. 31, 2019	Jan. 31, 2018
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	20,300,000	19,100,000
Common stock, shares outstanding	20,300,000	19,100,000

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Revenue:
Total revenue	$ 129,231	$ 114,490	$ 104,524
Cost of revenue:
Total cost of revenue	52,740	46,398	45,195
Gross profit	76,491	68,092	59,329
Operating expenses:
Sales and marketing	40,761	37,302	33,768
Research and development	33,903	29,328	24,239
General and administrative	17,613	15,186	14,598
Total operating expenses	92,277	81,816	72,605
Loss from operations	(15,786)	(13,724)	(13,276)
Interest and other income, net	830	603	327
Loss before income taxes	(14,956)	(13,121)	(12,949)
Income tax benefit	384	(3)
Net loss	$ (14,572)	$ (13,121)	$ (12,949)
Net loss per share of common stock:
Basic and diluted	$ (0.74)	$ (0.71)	$ (0.74)
Weighted-average number of shares used in per share amounts:
Basic and diluted	19,799,781	18,570,128	17,490,448
Subscription and services
Revenue:
Total revenue	$ 116,429	$ 101,999	$ 91,127
Cost of revenue:
Total cost of revenue	36,108	31,406	29,650
Product and other
Revenue:
Total revenue	12,802	12,491	13,397
Cost of revenue:
Total cost of revenue	$ 16,632	$ 14,992	$ 15,545

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
BALANCE at Jan. 31, 2016	$ 42,890,000	$ 2,000	$ 107,679,000	$ 17,000	$ (64,808,000)
BALANCE, Shares at Jan. 31, 2016		16,916,250
Issuance of common stock related to acquisition	165,000		165,000
Issuance of common stock related to acquisition, Shares		26,375
Issuance of common stock under equity-based plans	1,558,000		1,558,000
Issuance of common stock under equity based plans, Shares		1,223,211
Shares repurchased for tax withholdings on vesting of RSUs	(1,588,000)		(1,588,000)
Shares repurchased for tax withholdings on vesting of RSUs, Shares		(170,281)
Stock-based compensation	9,772,000		9,772,000
Changes in comprehensive loss	(28,000)			(28,000)
Cumulative stock-based compensation forfeiture adjustment			53,000		(53,000)
Net loss	(12,949,000)				(12,949,000)
BALANCE at Jan. 31, 2017	39,820,000	$ 2,000	117,639,000	(11,000)	(77,810,000)
BALANCE, Shares at Jan. 31, 2017		17,995,555
Issuance of common stock under equity-based plans	1,964,000		1,964,000
Issuance of common stock under equity based plans, Shares		1,345,392
Shares repurchased for tax withholdings on vesting of RSUs	(2,443,000)		(2,443,000)
Shares repurchased for tax withholdings on vesting of RSUs, Shares		(244,865)
Exercise of warrants to common stock, Shares		19,352
Stock-based compensation	10,921,000		10,921,000
Changes in comprehensive loss	(73,000)			(73,000)
Net loss	(13,121,000)				(13,121,000)
BALANCE at Jan. 31, 2018	37,068,000	$ 2,000	128,081,000	(84,000)	(90,931,000)
BALANCE, Shares at Jan. 31, 2018		19,115,434
Issuance of common stock related to acquisition	390,000	$ 35,513	390,000
Issuance of common stock under equity-based plans	2,935,000	$ 2,000	2,933,000
Issuance of common stock under equity based plans, Shares		1,374,336
Shares repurchased for tax withholdings on vesting of RSUs	(2,926,000)		(2,926,000)
Shares repurchased for tax withholdings on vesting of RSUs, Shares		(213,181)
Stock-based compensation	10,370,000		10,370,000
Changes in comprehensive loss	74,000			74,000
Cumulative adjustment upon adoption of Topic 606 (Note 3)	(292,000)				(292,000)
Net loss	(14,572,000)				(14,572,000)
BALANCE at Jan. 31, 2019	$ 33,047,000	$ 4,000	$ 138,848,000	$ (10,000)	$ (105,795,000)
BALANCE, Shares at Jan. 31, 2019		20,312,102

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Cash flows from operating activities:
Net loss	$ (14,572)	$ (13,121)	$ (12,949)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Stock-based compensation expense	10,370	10,921	9,772
Depreciation and amortization of property and equipment	2,269	1,958	1,648
Amortization of acquired intangible assets	740	313	348
Change in fair value of acquisition-related contingent consideration	(342)
Deferred income taxes	(384)
Amortization and accretion of premiums from investments	(332)	135	211
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable, net	(1,050)	1,856	895
Inventories	(4,034)	(249)	(819)
Deferred inventory costs	(179)	559	393
Prepaid expenses and other assets	(5,334)	(1,519)	84
Accounts payable and other liabilities	8,150	2,366	(156)
Deferred revenue	772	(46)	958
Net cash (used in) provided by operating activities	(3,926)	3,173	385
Cash flows from investing activities:
Purchases of short-term investments	(38,485)	(49,331)	(59,007)
Proceeds from maturities of short-term investments	53,736	49,217	32,330
Proceeds from sales of short-term investments	5,225	1,800	5,266
Capital expenditures	(1,921)	(2,478)	(1,558)
Business acquisition, net of cash assumed	(2,402)	(1,363)
Payment for purchase of convertible note	(1,300)
Net cash provided by (used in) investing activities	14,853	(2,155)	(22,969)
Cash flows from financing activities:
Proceeds from issuance of common stock	2,886	1,918	1,477
Repayment of debt, capital leases and warrants			(628)
Payment of acquisition related earn-out			(100)
Net cash used in financing activities	(40)	(525)	(839)
Net increase (decrease) in cash and cash equivalents	10,887	493	(23,423)
Cash and cash equivalents at beginning of period	4,483	3,990	27,413
Cash and cash equivalents at end of period	15,370	4,483	3,990
Supplemental disclosure of cash flow information:
Income taxes paid	1		3
Interest paid			18
Non-cash investing and financing activities:
Unpaid portion of capital expenditures	201	146	122
Contingent consideration for business acquisition	231	311
Holdback payable for business acquisition	780
Shares issued for business acquisition and related earn-out	390		165
Restricted Stock Units (RSUs)
Cash flows from financing activities:
Shares repurchased for tax withholdings on vesting of RSUs	$ (2,926)	$ (2,443)	$ (1,588)

Overview And Basis of Presentation

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Overview and Basis of Presentation

Note 1: Overview and Basis of Presentation

Ooma, Inc. and its wholly-owned subsidiaries (collectively, “Ooma” or the “Company”) create new communications experiences for businesses and consumers. The Company’s smart SaaS platform serves as a communications hub, which offers cloud-based communications solutions, smart security and other connected services.

Principles of Presentation and Consolidation. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated upon consolidation. In the opinion of the Company’s management, the consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation.

Fiscal Year. The Company’s fiscal year ends on January 31. References to fiscal 2019, fiscal 2018 and fiscal 2017 refer to the fiscal years ended January 31, 2019, January 31, 2018 and January 31, 2017, respectively.

Use of Estimates. The preparation of the Company’s financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.

Comprehensive Loss. For all periods presented, comprehensive loss approximated net loss in the consolidated statements of operations and the difference was not material. Therefore, the consolidated statements of comprehensive loss have been omitted.

Segment Reporting. The chief operating decision maker for the Company is the chief executive officer. The Company’s subscription plans, services and product offerings operate on a single SaaS platform and the chief executive officer reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. Accordingly, management has determined that the Company operates in one reportable segment.

Revenue was principally derived from customers located in the United States for all periods presented. All of the Company’s long-lived assets were attributable to operations in the United States, with a small portion attributable to operations in Canada and other countries, for all periods presented.

Secondary Public Offering. The Company completed its IPO in July 2015. In January and March 2017, the Company completed two secondary offerings in which certain stockholders of the Company sold an aggregate of 3.3 million shares and 3.3 million shares, respectively, of the Company’s common stock at a public offering price of $8.65 per share and $8.85 per share, respectively, including 0.4 million shares sold upon the underwriters’ exercise of the overallotment option in the March offering. The Company did not receive any of the proceeds from these offerings.

Significant Accounting Policies

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Significant Accounting Policies

Note 2: Significant Accounting Policies

Revenue Recognition

On February 1, 2018, the Company adopted Topic 606, Revenue from Contracts with Customers. The Company’s financial results for fiscal 2019 are presented in accordance with the provisions under Topic 606. Comparative prior period amounts have not been adjusted and continue to be reported under Topic 605, Revenue Recognition, the historic accounting standard in effect for the prior periods presented. See Note 3: Recent Accounting Standards below.

The Company derives its revenue from two sources: (1) subscription and services revenue, which are generated from sales of subscription plans for communications services and other connected services; and (2) product and other revenue. Subscriptions and services are sold directly to end-customers. Products are sold to end-customers through several channels, including but not limited to, distributors, retailers and resellers (collectively the “channel partners”), and Ooma sales representatives.

Under Topic 606, the Company determines revenue recognition through the following steps:

•

identification of the contract(s) with a customer;

•

identification of the performance obligations in the contract;

•

determination of the transaction price;

•

allocation of the transaction price to the performance obligations in the contract; and

•

recognition of revenue when, or as, the Company satisfies a performance obligation

Revenue is recorded net of any sales and telecommunications taxes collected from customers to be remitted to government authorities. Under Topic 606, the Company has maintained its policy to exclude these taxes from revenue.

Revenue disaggregated by revenue source consisted of the following (in thousands):

	Fiscal Year Ended January 31,
	2019		2018		2017
Subscription and services revenue	$	116,429	$	101,999	$	91,127
Product and other revenue		12,802		12,491		13,397
Total revenue	$	129,231	$	114,490	$	104,524

The Company derived approximately 68%, 71% and 72% of its total revenue from Ooma Residential and approximately 28%, 22% and 16% from Ooma Business in fiscal 2019, 2018 and 2017, respectively. No individual country outside of the United States represented 10% or more of total revenue for the periods presented. No single customer accounted for 10% or more of total revenue for the periods presented.

Subscription and Services Revenue. Most of the Company’s revenue is derived from recurring subscription fees related to service plans such as Ooma Business, Ooma Residential and other communications services. All subscription revenue is recognized ratably over the contractual service term. The Company’s service plans are generally sold as monthly subscriptions; however, certain plans are also offered as annual subscriptions. A small portion of the Company’s revenue is recognized on a point-in-time usage basis from services such as: prepaid international calls, directory assistance, and advertisements displayed through its Talkatone mobile application.

Product and Other Revenue. Product and other revenue is generated from the sale of on-premise appliances and end-point devices, including shipping and handling fees for the Company’s direct customers, and to a lesser extent from porting fees that enable customers to transfer their existing phone numbers. The Company recognizes revenue from sales to direct end-customers and channel partners at the point in time that control transfers which is typically when it delivers the product or when all customer contractual provisions have been met, if any. The Company’s distribution agreements with channel partners typically contain clauses for price protection and right of return. Therefore, the amount of product revenue recognized is adjusted for any variable consideration, such as expected returns and customer sales incentives as described in “Sales Allowances” below.

Amounts billed to customers related to shipping and handling are classified as revenue. Shipping and handling costs are expensed as incurred and classified as cost of revenue.

Multiple performance obligations. The Company’s contracts with customers typically contain multiple performance obligations that consist of product(s) and related communications services. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The contract transaction price is then allocated to the separate performance obligations on a relative stand-alone selling price (“SSP”) basis. The Company determines the SSP for its communications services based on observable historical stand-alone sales to customers, for which the Company requires that a substantial majority of selling prices fall within a reasonably narrow pricing range. The Company does not have a directly observable SSP for its on-premise appliance and end-point devices, and therefore establishes SSP based on its best estimates and judgments, considering company-specific factors such as pricing strategies, estimated product and other costs, and bundling and discounting practices.

Sales allowances. Credits and/or rebates issued to customers for product returns and sales incentives are deemed to be variable consideration under Topic 606, which the Company estimates and records as a reduction to revenue at the point of sale. Product returns and customer sales incentives are estimated based on the Company’s historical experience, current trends and expectations regarding future experience. Trends are influenced by product life cycles, new product introductions, market acceptance of products, the type of customer, seasonality and other factors. Product return and sales incentive rates may fluctuate over time but are sufficiently predictable to allow the Company to estimate expected future amounts. If actual future returns and sales incentives differ from past experience, additional reserves may be required. As of January 31, 2019 and 2018, the Company had total reserves for product returns and customer sales incentives of $0.6 million and $0.6 million, respectively.

Cash Equivalents and Short-term Investments. All highly liquid investments with an original maturity of three months or less at the date of purchase are classified as cash equivalents. Short-term investments are classified as available-for-sale and carried at fair value, with unrealized gains and losses, net of tax, recorded as a separate component of stockholders’ equity within accumulated other comprehensive (loss) income. All realized gains and losses and unrealized losses believed to be other-than-temporary are recorded in other expense, net in the current period. The cost of securities sold is based upon the specific identification method.

Fair Value of Financial Instruments. The Company records its financial assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the reporting date. The Company estimates and categorizes the fair value of its financial assets by applying the following hierarchy:

▪

Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets.

▪

Level 2: Observable prices based on inputs not quoted in active markets but are corroborated by market data.

▪

Level 3: Unobservable inputs that are supported by little or no market activity

Transfers among Level classifications are recognized as of the actual date of the events or change in circumstances that caused the transfers. The carrying value of the Company’s financial instruments, including cash equivalents, accounts receivable, inventory, accounts payable and other current assets and current liabilities approximates fair value due to their short maturities.

Concentration of Credit Risk. Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash equivalents, short-term investments, accounts receivables and other receivables. The Company’s cash equivalents and short-term investments are held by financial institutions that management believes are of high-credit quality. Such investments and deposits may, at times, exceed federally insured limits. The Company performs credit evaluations of its channel partners’ financial condition and generally does not require collateral for sales made on credit.

As of January 31, 2019 and 2018, one of the Company’s customers accounted for 15% and 10%, respectively, of the Company’s net accounts receivable balance.

Accounts Receivable. Accounts receivable are stated at invoice value less estimated allowances for doubtful accounts, product returns and customer sales incentives. The Company records its allowances for doubtful accounts based upon its assessment of several factors, including historical experience, aging of receivable balances and economic conditions. As of January 31, 2019 and 2018, the Company recorded allowances for doubtful accounts of $0.1 million and $0.4 million, respectively. (See “Sales Allowances” above regarding allowances for product returns and sales incentives.)

Inventories. Inventories, which consist of raw materials and finished goods, include the cost to purchase manufactured products, allocated labor and overhead. Inventories are stated at the lower of actual cost or market on a first-in, first-out basis. The Company writes down its inventory for estimated excess and obsolete inventory based upon management’s assessment of future demand and market conditions, and establishes a new cost basis for the inventory. Adjustments to reduce inventory to net realizable value are recognized as a component of cost of revenue in the consolidated statement of operations.

Customer Acquisition Costs. Sales commissions and other costs paid to internal sales personnel, third-party sales entities and value-added resellers are considered incremental and recoverable costs of obtaining customer contracts. (The resellers are selling agents for the Company and earn sales commissions which are directly tied to the value of the contracts that the Company enters with the end-user customers.) Under Topic 606, beginning fiscal 2019, these costs are capitalized and amortized on a systematic basis over the expected period of benefit of five years, calculated based on both qualitative and quantitative factors, such as expected subscription term and expected renewal periods of its customer contracts, product life cycles and customer attrition. Amortization expense is included in sales and marketing expenses in the consolidated statement of operations. The Company pays sales commissions on initial contracts and contracts for increased purchases with existing customers (expansion contracts). The Company does not pay sales commissions for contract renewals. The Company periodically evaluates whether there have been any changes in its business, the market conditions in which it operates or other events which would indicate that its amortization period should be changed or if there are potential indicators of impairment.

As of January 31, 2019, total deferred commission costs on the consolidated balance sheet was approximately $4.5 million, of which the $1.1 million current portion was included in other current assets and the $3.4 million non-current portion was included in other assets. During fiscal 2019, amortization expense was $0.7 million and there was no impairment loss in relation to the costs capitalized.

Website Development Costs. The Company capitalizes certain costs to develop its websites when preliminary development efforts are successfully completed, management has authorized and committed project funding, and it is probable that the project will be completed and the software will be used as intended. Such costs are amortized on a straight-line basis over the estimated useful life of approximately two years. Costs related to preliminary project activities and post-implementation activities are expensed as incurred. The Company capitalized website development costs of approximately $0.8 million, $0.6 million and $0.4 million in fiscal 2019, 2018 and 2017, respectively.

Property and Equipment. Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed over the estimated useful lives of the assets, using the straight-line method, generally three to five years. Leasehold improvements are amortized over the shorter of the lease term or estimated useful lives of the respective assets. Repairs and maintenance costs that do not extend the life or improve the asset are expensed as incurred.

Goodwill. Goodwill represents the excess of the purchase price over the fair value of the net assets acquired in a business combination. Goodwill is evaluated for impairment annually in the fourth quarter of its fiscal year, or more frequently if indicators of potential impairment arise. The Company has a single reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. No impairment has been recognized for any of the periods presented.

Intangible Assets. Acquired intangible assets other than goodwill, which primarily consist of developed technology and customer relationships, are amortized over their useful lives unless the lives are determined to be indefinite. For intangible assets acquired in a business combination, the estimated fair values of the assets received are used to establish their recorded values. Valuation techniques consistent with the market approach, income approach and/or cost approach are used to measure fair value.

Impairment of Long-Lived Assets. Long-lived assets, such as property and equipment, capitalized website development costs, and intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. The Company has not recorded any material impairment charges.

Research and Development. Research and development costs, including new product development, are charged to operating expenses as incurred in the consolidated statements of operations. Research and development included personnel-related costs (including stock-based compensation), allocated costs of facilities and information technology, supplies, software tools and product certification.

Advertising. Advertising costs are included in sales and marketing and expensed as incurred, except for production costs associated with television and radio advertising, which are expensed on the first date of airing. Advertising costs were $13.7 million, $14.4 million and $16.5 million for fiscal 2019, 2018 and 2017, respectively.

Advertising payments to the Company’s channel partners are recorded as a reduction in revenue. These costs totaled $0.3 million annually for each of the fiscal years 2019, 2018 and 2017, respectively.

Stock-Based Compensation. Stock-based compensation expense for all stock-based awards granted to employees is measured at the grant date based on the fair value of the equity award and is recognized as expense over the requisite service period, which is generally the vesting period. The fair value of options granted is estimated on the date of grant using the Black-Scholes option pricing model. The fair value of each RSU granted is determined using the fair value of the Company’s common stock on the date of grant. The fair value of each stock purchase right under the Company's ESPP is calculated based on the closing price of the Company's stock on the date of grant and the value of a call and put option is estimated using the Black-Scholes pricing model. See Note 7: Stockholders’ Equity and Note 8: Stock-based Compensation below for additional information.

Income Taxes. Income taxes are recorded using the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income (or loss) in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. A tax position is recognized when it is more-likely-than-not that the tax position will be sustained upon examination, including resolution of any related appeals or litigation processes. A tax position that meets the more likely than not recognition threshold is measured at the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority.

Interest and penalties associated with unrecognized tax benefits are classified as income tax expense. The Company had no interest or penalty accruals associated with uncertain tax benefits in its consolidated balance sheets and statements of operations for any periods presented.

Foreign currency. The U.S. dollar is the functional currency of the Company's foreign subsidiaries. Foreign currency remeasurement and transaction gains and losses are included in other expense, net and have not been material for any periods presented.

Recent Accounting Standards

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Recent Accounting Standards

Note 3: Recent Accounting Standards

Adopted Accounting Standards

Revenue Recognition. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), which superseded the revenue recognition guidance in Topic 605 with a comprehensive revenue measurement and recognition standard and expanded disclosure requirements. Topic 606 also includes Subtopic 340-40, Other Assets and Deferred Costs – Contracts with Customers, which requires the deferral of incremental costs to acquire customer contracts, including sales commissions. The Company adopted the new standard effective February 1, 2018 under the modified retrospective method applied to only those contracts that were not completed as of the adoption date. The Company’s financial results for fiscal 2019 are presented in accordance with the provisions under Topic 606. Comparative prior period amounts have not been adjusted and continue to be reported under the historic accounting standards in effect for the periods presented. The Company has implemented policies, processes and controls to support the standard's measurement and disclosure requirements.

The new standard impacted revenue recognition timing on product sales made to certain channel partners, whereby revenue is now recognized when the Company delivers product to the channel partner (sell-in basis) rather than deferring recognition until resale by the partner to the end customer (sell-through basis). The adoption of the new standard also changed the treatment of sales commissions, whereby the Company now capitalizes its incremental costs of acquiring customer contracts and amortizes these deferred costs over the expected period of benefit. Previously, all sales commissions were expensed as incurred. See Note 2: Significant Accounting Policies above for further discussion of the Company’s updated significant accounting policies.

As a result of adopting Topic 606, the February 1, 2018 beginning balance of accumulated deficit increased by $0.3 million, reflecting a net decrease to deferred revenue of approximately $1.0 million and adjustments to deferred inventory costs and other related accounts of approximately $1.3 million. Deferred inventory costs represented the inventory that was shipped to a channel partner and had not been sold through to an end-customer. Deferred commissions related to open contracts as of the adoption date were immaterial.

The following tables summarize the impact of adopting Topic 606 on the Company’s consolidated statement of operations and balance sheet (in thousands, except per share amounts):

Statement of Operations:	Fiscal Year Ended January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Total revenue	$	129,231		$	(169	)	$	129,062
Total cost of revenue		52,740			(493	)		52,247
Gross profit		76,491			324			76,815
Sales and marketing expense		40,761			4,468			45,229
Net loss		(14,572	)		(4,144	)		(18,716	)
Net loss per share - basic and diluted		(0.74	)		(0.21	)		(0.95	)

Balance Sheet:	As of January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Accounts receivable, net	$	3,723		$	49		$	3,772
Other current assets ⁽¹⁾		5,450			308			5,758
Other assets ⁽²⁾		5,379			(3,387	)		1,992
Accrued expenses ⁽³⁾		19,048			(732	)		18,316
Deferred revenue		15,443			1,554			16,997
Accumulated deficit		(105,795	)		(3,852	)		(109,647	)

⁽¹⁾ Other current assets include deferred commissions and deferred inventory costs.

⁽²⁾Other assets include non-current deferred commissions.

⁽³⁾Accrued expenses include certain accrued sales incentives.

The adoption of the new standard did not have any impact on net cash flows for operating, investing and financing activities in the consolidated statements of cash flows.

Business Combinations. The Company adopted ASU 2017-01, Business Combinations (Topic 805) – Clarifying the Definition of a Business in the first quarter of fiscal 2019. The updated standard provided guidance to assist entities in evaluating when a set of transferred assets and activities constitutes a business. To be considered a business, an acquisition would have to include an input and a substantive process that together significantly contributes to the ability to create outputs. The adoption of this standard had no impact on the Company’s consolidated financial statements.

Accounting Standards Not Yet Adopted

Leases. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) which supersedes the lease accounting guidance in Topic 840 and requires that the Company recognize operating leased assets and corresponding liabilities on the balance sheet and provide enhanced disclosure of lease activity.

The Company is adopting Topic 842 effective February 1, 2019 using the optional transition method, whereby it will not be adjusting comparative period financial statements for the new standard. The Company has substantially completed its process to identify its population of lease arrangements and its evaluation of each arrangement under the guidance. The Company has elected the package of practical expedients, which among other things, allows the Company to maintain its existing classification of its current leases. The Company has also elected as an accounting policy not to separate non-lease components from lease components and instead to account for these components as a single component. Additionally, the Company has made a policy election to not recognize leased assets and liabilities on the balance sheet for leases with an initial term of 12 months or less.

The Company expects to record right-of-use leased assets and corresponding liabilities between $3.8 million and $4.8 million at the beginning of the first quarter of fiscal 2020. The Company does not expect the adoption to have a material impact on its consolidated statement of operations and its consolidated statement of cash flows. The Company is in the process of implementing policies and controls to support the standard's measurement and disclosure requirements.

Stock-based Compensation. In June 2018, the FASB issued ASU 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, which expands the scope of Topic 718 to include and simplify the accounting for share-based payments issued to nonemployees. Under the amended standard, most of the guidance on nonemployee share-based payments would be aligned with the requirements for share-based payments granted to employees. The new standard is effective for the Company beginning in fiscal 2020. The Company does not expect the adoption to have a material impact on its consolidated financial statements.

Fair Value Measurement. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurements, which expands the disclosure requirements for Level 3 fair value measurements as well as eliminates, adds and modifies certain other disclosure requirements for fair value measurements. The amendment is effective for the Company beginning in fiscal 2020. The Company is evaluating the effect of adoption on its consolidated financial statements.

Fair Value Measurements

12 Months Ended

Jan. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 4: Fair Value Measurements

The Company’s financial assets and liabilities that are measured at fair value on a recurring basis by level within the fair value hierarchy were as follows (in thousands):

	Balance as of January 31, 2019								Balance as of January 31, 2018
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents:
Money market funds	$	5,951	$	—	$	—	$	5,951	$	554	$	—	$	—	$	554
Commercial paper		—		5,429		—		5,429		—		2,844		—		2,844
Total cash equivalents	$	5,951	$	5,429	$	—	$	11,380	$	554	$	2,844	$	—	$	3,398
Cash								3,990								1,085
Total cash and cash equivalents							$	15,370							$	4,483

Short-term investments:
U.S. government securities	$	11,087	$	—	$	—	$	11,088	$	20,867	$	—	$	—	$	20,867
Corporate debt securities		—		4,735		—		4,735		—		13,895		—		13,895
Commercial paper		—		8,253		—		8,253		—		9,272		—		9,272
U.S. agency securities		—		990		—		990		—		1,996		—		1,996
Asset-backed securities		—		2,187		—		2,187		—		1,277		—		1,277
Total short-term investments	$	11,087	$	16,165	$	—	$	27,253	$	20,867	$	26,440	$	—	$	47,307

Liabilities:
Contingent consideration	$	—	$	—	$	200	$	200	$	—	$	—	$	311	$	311
Total liabilities	$	—	$	—	$	200	$	200	$	—	$	—	$	311	$	311

The Company classifies its cash equivalents and short-term investments within Level 1 or Level 2 because it uses quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. The fair value of Level 2 financial instruments were obtained from an independent pricing service, which used quoted market prices for identical or comparable instruments or model driven valuations that used observable market data or inputs corroborated by observable market data. Commercial paper was valued using market prices, if available, adjusted for accretion of the purchase price to face value at maturity. There were no transfers of financial assets or liabilities between levels during the periods presented.

For the periods presented, the amortized cost of cash equivalents and marketable securities approximated their fair value and there were no material realized or unrealized gains or losses, either individually or in the aggregate. No investments in the Company’s portfolio were other-than-temporarily impaired.

Level 3 liabilities consisted of contingent consideration related to the Company’s acquisitions of Butterfleye in December 2017 and Voxter in March 2018 that were estimated using an income-based approach. Key inputs included assumptions regarding the achievement of certain performance milestones and discount rates consistent with the level of risk and economy in general. Contingent consideration is classified as a component of accrued expenses on the consolidated balance sheets and changes in fair value are recorded to general and administrative expenses in the consolidated statements of operations.

Changes in the Level 3 fair value category for the periods presented were as follows (in thousands):

	Contingent
		Consideration
Balance at January 31, 2017		$	—
Add: contingent consideration from Butterfleye acquisition			311
Balance at January 31, 2018			311
Add: contingent consideration from Voxter acquisition			231
Changes in fair value			(342	)
Balance at January 31, 2019		$	200

The following table classifies the Company’s short-term investments by contractual maturities (in thousands):

	As of January 31, 2019				As of January 31, 2018
	Amortized Value		Fair Value		Amortized Value		Fair Value
One year or less	$	27,263	$	27,253	$	43,227	$	43,172
Over one year and less than two years		—		—		4,164		4,135
Total	$	27,263	$	27,253	$	47,391	$	47,307

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Goodwill and Acquired Intangible Assets

12 Months Ended

Jan. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets

Note 5: Goodwill and Acquired Intangible Assets

The carrying amount of goodwill was $3.9 million and $1.9 million as of January 31, 2019 and 2018, respectively. The Company recognized $2.1 million in intangibles and $1.9 million in goodwill following the acquisition of Voxter in March 2018. See Note 12: Acquisitions and Divestitures below. Goodwill increased $0.1 million subsequent to this acquisition based on a deferred tax liability adjustment recorded in the fourth quarter of fiscal 2019.

The gross value, accumulated amortization and carrying values of intangible assets were as follows (in thousands):

		As of January 31, 2019							As of January 31, 2018
	Estimated life (in years)	Gross Value		Accumulated Amortization			Carrying Value		Gross Value		Accumulated Amortization			Carrying Value
Developed technology	5	$	2,716	$	(1,121	)	$	1,595	$	1,568	$	(630	)	$	938
Customer relationships	5		902		(157	)		745		—		—			—
Trade name	5		451		(166	)		285		262		(81	)		181
Patents and licenses	3.8-7		714		(704	)		10		714		(698	)		16
User relationships	N/A		—		—			—		458		(458	)		—
Total amortizable assets			4,783		(2,148	)		2,635		3,002		(1,867	)		1,135
In-process R&D ⁽¹⁾	N/A		—		—			—		157		—			157
Total intangible assets		$	4,783	$	(2,148	)	$	2,635	$	3,159	$	(1,867	)	$	1,292

⁽¹⁾ Reclassified to developed technology in the fourth quarter of fiscal 2019.

Amortization expense was $0.7 million, $0.3 million and $0.3 million in fiscal 2019, 2018 and 2017, respectively. At January 31, 2019, the estimated future amortization expense for intangible assets is as follows (in thousands):

Fiscal Years Ending January 31,	Total
2020		691
2021		642
2022		638
2023		612
2024 and thereafter		52
Total	$	2,635

Balance Sheet Components

12 Months Ended

Jan. 31, 2019

Balance Sheet Components [Abstract]

Balance Sheet Components

Note 6: Balance Sheet Components

The following sections and tables provide details of selected balance sheet items (in thousands):

Inventories

	As of January 31,
	2019		2018
Finished goods	$	7,567	$	5,517
Raw materials		2,550		562
Total inventory	$	10,117	$	6,079

Other current assets

	As of January 31,
	2019		2018
Prepaid expenses	$	2,681	$	1,921
Deferred sales commissions ⁽¹⁾		1,081		—
Deferred inventory costs ⁽¹⁾		334		1,061
Other current assets		1,354		1,415
Total other current assets	$	5,450	$	4,397

⁽¹⁾ Changes in deferred inventory costs and deferred sales commissions were attributable to the Company’s adoption of Topic 606 on February 1, 2018.

See Note 2: Significant Accounting Policies above.

Property and equipment, net

		As of January 31,
	Estimated Life (in years)	2019			2018
Computer equipment and software	3-4	$	7,109		$	7,180
Website development costs	2		3,323			2,579
Machinery and equipment	3-5		1,190			1,473
Office furniture and fixtures	5		114			88
Leasehold improvements	Shorter of estimated life or remaining lease term		449			651
Total property and equipment		$	12,185		$	11,971
Less: accumulated depreciation and amortization			(7,622	)		(7,239	)
Property and equipment, net		$	4,563		$	4,732

Depreciation and amortization of property and equipment (including website development) totaled $2.3 million, $2.0 million and $1.6 million in fiscal 2019, 2018 and 2017, respectively.

Other long-term assets

	As of January 31,
	2019		2018
Deferred sales commissions⁽¹⁾	$	3,387	$	—
Convertible note receivable		1,300		—
Other assets		692		336
Total other assets	$	5,379	$	336

⁽¹⁾ Changes in deferred sales commissions were attributable to the Company’s adoption of Topic 606 on February 1, 2018. See Note 2: Significant Accounting Policies above.

In December 2018, the Company invested $1.3 million in cash to Global Telecomm Corporation (“GTC”), a small privately-held technology company, in exchange for an 18-month convertible promissory note, bearing interest at 10% annually. The principal and unpaid accrued interest on the promissory note will convert to shares of GTC common or preferred stock upon the occurrence of certain future events. The Company has partnered with GTC on certain research and development efforts. The Company is required to consolidate the assets and liabilities of variable interest entities (“VIEs”) in which it is deemed to be the primary beneficiary. The primary beneficiary is the party that has the power to make the decisions that most significantly affect the economic performance of the VIE and has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. GTC is considered a VIE because, among other factors, it lacks sufficient equity to permit the entity to finance its activities without additional subordinated financial support from other parties. The Company’s convertible promissory note represents a variable interest. However, the Company does not participate in the day-to-day operating decisions or other decisions that would allow it to control GTC, and therefore, the Company is not considered the primary beneficiary and does not need to consolidate GTC’s financial statements. As of January 31, 2019, the Company’s maximum exposure to loss was equal to the carrying value of its convertible promissory note. For all periods presented, the Company had no other variable interests in VIEs.

Accrued expenses

	As of January 31,
	2019		2018
Payroll and related expenses	$	7,926	$	5,423
Regulatory fees and taxes		5,645		5,239
Acquisition-related consideration		925		353
Other		4,552		3,762
Total accrued expenses	$	19,048	$	14,777

Deferred revenue

Deferred revenue primarily consists of billings or payments received in advance of meeting revenue recognition criteria. The Company’s communications services are sold as monthly or annual subscriptions, payable in advance. The Company recognizes deferred services revenue on a ratable basis over the term of the contract as the services are provided. For all arrangements, any revenue that has been deferred and is expected to be recognized beyond one year is classified in long term liabilities on the consolidated balance sheets.

	As of January 31,
	2019		2018
Deferred revenue:
Subscription and services	$	15,682	$	14,568
Product and other		68		1,416
Total deferred revenue		15,750		15,984
Less: current deferred revenue		15,443		15,556
Noncurrent deferred revenue included in other long-term liabilities	$	307	$	428

During fiscal 2019, the Company recognized revenue of approximately $14.2 million pertaining to amounts deferred as of January 31, 2018. As of January 31, 2019, the Company’s deferred revenue balance was primarily composed of subscription contracts that were invoiced during fiscal 2019.

Remaining Performance Obligations. As of January 31, 2019, revenue of approximately $0.5 million is expected to be recognized from remaining performance obligations for open contracts with an original expected length of more than one year. This amount includes both long-term deferred revenue and non-cancelable contract amounts that will be invoiced and recognized as revenue in future periods. The Company expects to recognize revenue of approximately $0.2 million over the next 12 months and the remainder thereafter.

Stockholders' Equity

12 Months Ended

Jan. 31, 2019

Equity [Abstract]

Stockholders' Equity

Note 7: Stockholders’ Equity

Common Stock Reserved for Future Issuance

The Company had shares of common stock reserved for issuance as follows:

	As of January 31,
	2019		2018
Restricted stock units outstanding		1,925,311		1,966,895
Options to purchase common stock		1,691,272		1,801,232
Shares available for future issuance under stock plans		1,141,482		928,024
Shares reserved under ESPP		249,933		598,033
Warrants to purchase common stock		1,107		4,881
Total shares reserved for issuance		5,009,105		5,299,065

2015 Equity Incentive Plan (“2015 Plan”)

The Company’s 2015 Plan provides for the grant of incentive stock options to its employees and any of its subsidiary corporations’ employees, and for the grant of RSUs, non-statutory stock options, stock appreciation rights, restricted stock, performance units and performance shares to its employees, directors and consultants and its subsidiary corporations’ employees and consultants.

Stock Options. Options to purchase shares of common stock may be granted to employees, directors and consultants. These options vest from date of grant to up to five years and expire ten years from the date of grant. Options may be exercised anytime during their term in accordance with the vesting/exercise schedule specified in the recipient’s stock option agreement and in accordance with the plan provisions. Shares issued upon exercise prior to vesting, are subject to a right of repurchase, which lapses according to the original option vesting schedule.

Stock option activity for fiscal 2019 was as follows:

				Weighted Average		Weighted Average		Aggregate
	Number of			Exercise Price		Contractual Term		Intrinsic Value
	Shares			Per Share		(in years)		(in thousands)
Balance as of January 31, 2018		1,801,232		$	6.09		6.2	$	8,270
Granted		100,000		$	11.75
Exercised		(185,535	)		6.03
Canceled		(24,425	)		9.48
Balance as of January 31, 2019		1,691,272		$	6.39		5.4	$	14,755
Vested and exercisable - January 31, 2019		1,525,946		$	5.86		5.1	$	14,112

The aggregate intrinsic value of vested options exercised during fiscal 2019, 2018 and 2017 was $1.3 million, $0.3 million and $1.3 million, respectively. The weighted average grant date fair value of options granted during fiscal 2019, 2018 and 2017 was $5.28 per share, $4.81 per share and zero , respectively. No stock options were granted during fiscal 2017.

Restricted Stock Units. RSUs may be granted to employees, non-employee board members and consultants. These RSUs vest ratably over a period ranging from one to four years, and are subject to the participant’s continuing service to the Company over that period. Until vested, RSUs do not have the voting and dividend participation rights of common stock and the shares underlying the awards are not considered issued and outstanding.

RSU activity for fiscal 2019 and 2018 was as follows:

	Number of Shares			Weighted Average Grant-Date Fair Value Per Share
Balance as of January 31, 2017		1,859,196		$	7.65
Granted		1,222,605			10.17
Vested		(936,869	)		8.54
Canceled		(178,037	)		8.77
Balance as of January 31, 2018		1,966,895			8.85
Granted		1,176,647			11.96
Vested		(921,533	)		9.12
Canceled		(296,698	)		9.70
Balance as of January 31, 2019		1,925,311		$	10.49

Vested RSUs included shares of common stock that the Company withheld on behalf of certain employees to satisfy the minimum statutory tax withholding requirements, as defined by the Company. The Company withheld an aggregate amount of $2.9 million, $2.4 million and $1.6 million in fiscal 2019, 2018 and 2017, respectively, which were classified as financing cash outflows in the consolidated statements of cash flows. The Company canceled and returned these shares to the 2015 Plan, which are available under the plan terms for future issuance.

Employee Stock Purchase Plan

The ESPP allows eligible employees to purchase shares of common stock at a discount through payroll deductions of up to 15% of their eligible compensation (subject to plan limitations). The ESPP provides for a 24-month offering period comprised of four purchase periods of approximately six months. Employees are able to purchase shares at 85% of the lower of the fair market value of the Company’s common stock as of the first date or the ending date of each six-month offering period. The offering periods are scheduled to start on the first trading day on or after March 15 and September 15 of each year.

During fiscal 2019, 2018 and 2017, employees purchased 0.3 million, 0.3 million and 0.2 million shares, respectively, at a weighted purchase price of $6.82, $5.48 and $5.01 per share, respectively.

Stock-Based Compensation

12 Months Ended

Jan. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

Note 8: Stock-Based Compensation

Total stock-based compensation recognized for stock-based awards in the consolidated statements of operations was as follows (in thousands):

	Fiscal Year Ended January 31,
	2019		2018		2017
Cost of revenue	$	920	$	1,102	$	1,026
Sales and marketing		1,442		1,818		1,438
Research and development		3,762		3,972		3,586
General and administrative		4,246		4,029		3,722
Total stock-based compensation expense	$	10,370	$	10,921	$	9,772

The income tax benefit related to stock-based compensation expense was zero for all periods presented due to a full valuation allowance on the Company's deferred tax assets (see Note 9: Income Taxes below). As of January 31, 2019, there was $20.2 million of unrecognized stock-based compensation expense related to unvested RSUs, stock options and ESPP that will be recognized on a straight-line basis over the remaining weighted-average vesting period of approximately 2.5 years.

Fair value disclosures. The fair value of stock options granted and purchased under the Company's ESPP was estimated using the Black-Scholes option pricing model. The expected term of options granted to employees was based on the simplified method as the Company does not have sufficient historical exercise data, and the expected term of the ESPP was based on the contractual term. As the Company does not have a significant trading history for its common stock, expected volatility was determined using a combination of the average historical volatility of a group of comparable publicly traded companies and its own common stock. Risk-free interest rate was based on the yields of U.S. Treasury securities with maturities similar to the expected term. Dividend yield was zero as the Company does not have any history of, nor plans to make, dividend payments.

The fair value of employee stock options and ESPP was estimated using the Black–Scholes model with the following assumptions, as applicable:

	Fiscal Year Ended January 31,
	2019	2018	2017
Stock Options:
Expected volatility	43%	47%	NA
Expected term (in years)	6.1	6.1	NA
Risk-free interest rate	2.7	1.8%-2.1%	NA
Dividend yield	NA	NA	NA

	Fiscal Year Ended January 31,
	2019	2018	2017
ESPP:
Expected volatility	39%-56%	35%-41%	37%-50%
Expected term (in years)	0.5-2.0	0.5-2.0	0.5-2.0
Risk-free interest rate	2.0%-2.8%	0.9%-1.4%	0.5%-1.0%
Dividend yield	NA	NA	NA

Income Taxes

12 Months Ended

Jan. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 9: Income Taxes

Income tax benefit differed from the amount computed by applying the federal blended statutory income tax rate of 21% to pretax loss as a result of the following (in thousands):

	Fiscal Year Ended January 31,
	2019			Rate			2018			Rate			2017			Rate
Federal tax at statutory rate	$	(3,141	)		21	%	$	(4,316	)		33	%	$	(4,403	)		34	%
Impact of U.S. tax law change		58			—			11,667			(89	)%		—			—
Change in valuation allowance		5,603			(37	)%		(6,786	)		52	%		4,881			(38	)%
Research and development credit		(2,155	)		14	%		(1,080	)		8	%		(738	)		6	%
State taxes		(494	)		3	%		(396	)		3	%		(230	)		2	%
Stock-based compensation		(991	)		7	%		387			(3	)%		387			(3	)%
Permanent tax adjustment		843			(6	)%		527			(4	)%		103			(1	)%
Impact of foreign operations		(105	)		1	%		—			—			—			—
Other		(2	)		—			—			—			—			—
Total	$	(384	)		(3	)%	$	3			0	%	$	—			0	%

Income tax expense differs from the amount computed by applying the statutory federal income tax rate primarily as the result of changes in the valuation allowance.

The tax effects of temporary differences that give rise to significant portions of the Company’s deferred tax assets and liabilities related to the following (in thousands):

	As of January 31,
	2019			2018
Deferred tax assets:
Accruals and reserves	$	1,549		$	2,281
Stock-based compensation		1,071			1,030
Intangible assets amortization		(21	)		61
Deferred revenue		73			125
Net operating loss carry forwards		26,277			22,047
Tax credit carryover		5,977			3,810
Gross deferred tax assets		34,926			29,354
Valuation allowance		(34,309	)		(28,657	)
Net deferred tax assets	$	617		$	697
Deferred tax liabilities:
Acquired intangible assets	$	(607	)	$	(313	)
Fixed assets depreciation		(154	)		(384	)
Gross deferred tax liabilities	$	(761	)	$	(697	)
Total deferred tax liabilities	$	(144	)	$	—

On December 22, 2017, the Tax Cuts and Jobs Act (“Tax Act”) was enacted, reducing the corporate income tax rate from 35% to 21%, effective January 1, 2018. The carrying value of the Company's deferred tax assets was also determined by the enacted U.S. corporate income tax rate. Consequently, any changes in the U.S. corporate income tax rate have impacted the carrying value of the Company’s deferred tax assets. Under the new corporate income tax rate of 21%, deferred income taxes decreased, with a corresponding decrease to the valuation allowance. Therefore, the Tax Act had no impact on the Company's fiscal 2019 net loss. As of January 31, 2019, the Company has completed its accounting of the tax effects from the enactment of the Tax Act.

The Company has a Section 162(m) stock awards limitation on deferred tax assets of $0.1 million. Effective for tax years beginning on January 1, 2018 or later, which is considered fiscal 2019 for the Company, tax reform legislation modifies Section 162(m) rules to repeal the performance-based compensation and commission exceptions to the $1.0 million deduction limitation. However, written binding contracts in effect on November 2, 2017, including plans where the right to participate in the plan is part of a written contract with an executive, are grandfathered and not subject to limitation under Section 162(m). The Company believes some of its contracts will not be subject to limitation and will continue to monitor the deferred tax assets related to deferred compensation expense and share-based compensation expense on a going forward basis.

Management believes that, based on available evidence, both positive and negative, it is more likely than not that the deferred tax assets will not be utilized, such that a full valuation allowance has been recorded. The valuation allowance for deferred tax assets was $34.3 million, $28.7 million and $34.9 million as of January 31, 2019, 2018 and 2017, respectively. The net change in the total valuation allowance for fiscal 2019 and 2018 was an increase of $5.7 million and a decrease of $6.2 million, respectively.

As of January 31, 2019, the Company had approximately $99.0 million and $71.8 million of net operating loss (“NOL”) carryforwards available to offset future taxable income for both federal and state purposes, respectively. If not utilized, these available carryforward losses will expire in various amounts for federal and state tax purposes beginning in 2030. In addition, the Company had approximately $5.8 million and $5.2 million of federal and state research and development tax credits, respectively, available to offset future taxes. If not utilized, the available federal credits will begin to expire in 2030. California state research and development tax credits can be carried forward indefinitely.

Uncertain Tax Positions

The Company has unrecognized tax benefits (“UTBs”) of approximately $4.4 million as of January 31, 2019. Deferred tax assets associated with these UTBs are fully offset by a valuation allowance. If recognized, these UTBs would not affect the effective tax rate before consideration of the valuation allowance. The following table summarizes the activity related to UTBs (in thousands):

Balance at January 31, 2017	$	1,815
Increase related to prior year positions		139
Increase related to current year tax positions		871
Balance at January 31, 2018		2,825
Increase related to prior year positions		8
Increase related to current year tax positions		1,592
Balance at January 31, 2019	$	4,425

The UTBs reported above, if recognized, would not affect the effective tax rate before consideration of the valuation allowance. The Company had no interest or penalty accruals associated with uncertain tax benefits in its balance sheets and statements of operations for both fiscal 2019 and 2018. The Company does not have any tax positions for which it is reasonably possible the total amount of gross unrecognized benefits will increase or decrease within 12 months of the year ended January 31, 2019. Because the Company has net operating loss and credit carryforwards, there are open statutes of limitations in which federal, state and foreign taxing authorities may examine the Company’s tax returns for all years from 2009 through the current period.

Retirement Plan

12 Months Ended

Jan. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Retirement Plan

Note 10: Retirement Plan

The Company offers a qualified 401(k) defined contribution plan to eligible full-time employees that provides for discretionary employer matching and profit-sharing contributions. Eligible employees may contribute up to a maximum of $18,500 per year, or $24,500 for employees over 50 years of age, and the Company matches 50% of the first 6% of each employee’s eligible compensation that is contributed to the 401(k) plan. Contributions made by the Company vest 100% upon contribution. The Company’s matching contributions to the plan, which are expensed immediately as compensation costs, were $0.7 million, $0.5 million and $0.4 million in fiscal 2019, 2018 and 2017, respectively.

Commitments and Contingencies

12 Months Ended

Jan. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 11: Commitments and Contingencies

Operating Leases. The Company’s principal commitments consist of obligations under enforceable and legally binding lease agreements for office space and data center facilities. The Company assumes renewals in its determination of the lease term if the renewals are deemed to be reasonably assured. Rent expense was $2.5 million, $1.9 million and $2.0 million for fiscal 2019, 2018 and 2017, respectively.

As of January 31, 2019, future minimum rental commitments under non-cancelable operating leases were as follows (in thousands):

Fiscal Year Ending January 31,	Operating Leases
2020	$	1,983
2021		1,408
2022		917
2023		266
2024 and thereafter		49
Total	$	4,623

Purchase Commitments. As of January 31, 2019, non-cancelable purchase commitments with the Company’s contract manufacturers were $4.2 million.

Legal Proceedings

In addition to the litigation matters described below, from time to time, the Company may be involved in a variety of other claims, lawsuits, investigations, and proceedings relating to contractual disputes, intellectual property rights, employment matters, regulatory compliance matters, and other litigation matters relating to various claims that arise in the normal course of business. Defending such proceedings is costly and can impose a significant burden on management and employees, the Company may receive unfavorable preliminary or interim rulings in the course of litigation, and there can be no assurances that favorable final outcomes will be obtained.

The Company determines whether an estimated loss from a contingency should be accrued by assessing whether a loss is deemed probable and can be reasonably estimated. The Company assesses its potential liability by analyzing specific litigation and regulatory matters using reasonably available information. The Company develops its views on estimated losses in consultation with inside and outside counsel, which involves a subjective analysis of potential results and outcomes, assuming various combinations of appropriate litigation and settlement strategies. Legal fees are expensed in the period in which they are incurred.

As of January 31, 2019, the Company does not have any accrued liabilities recorded for loss contingencies in its consolidated financial statements.

Berks County Litigation

On January 21, 2016, the County of Berks, Pennsylvania filed a lawsuit in the Berks County Court of Common Pleas naming the Company and 113 other telephone service providers as defendants (the “Berks County Litigation”), alleging breach of fiduciary duty, fraud, and negligent misrepresentation in connection with alleged violations of the Pennsylvania 911 Emergency Communication Services Act (“PA 911 Act”) for failure to collect from subscribers and remit certain fees pursuant to the PA 911 Act. The plaintiff seeks a declaratory judgment that the Company must comply with the PA 911 Act, compensatory and punitive damages and such other relief as the court may deem proper. The Company believes that the plaintiff’s claims are without merit since the Company has no employees, property or other indicia of a “substantial nexus” with the State of Pennsylvania. The Company intends to continue vigorously defending against this lawsuit. However, litigation is unpredictable and there can be no assurances that the Company will obtain a favorable final outcome or that it will be able to avoid unfavorable preliminary or interim rulings in the course of litigation that may significantly add to the expense of its defense and could result in substantial costs and diversion of resources.

Based on the Company’s current knowledge, the Company has determined that the amount of any material loss or range of any losses that is reasonably possible to result from the Berks County Litigation is not estimable.

Deep Green Wireless Litigation

On June 8, 2016, plaintiff Deep Green Wireless LLC filed a complaint in the U.S. District Court for the Eastern District of Texas against Ooma, Inc., alleging infringement of U.S. Patent No. RE42,714 (the “Deep Green Wireless Patent”, and such litigation, the “Deep Green Wireless Litigation”). The complaint seeks unspecified monetary damages, costs, attorneys’ fees and other appropriate relief. In February 2017, the Court granted the Company’s motion to transfer the case to the Northern District of California, which proceeding has been stayed pending the outcome of an inter partes review of the Deep Green Wireless Patent by the United States Patent Trial and Appeal Board (“PTAB”). The PTAB has granted the Company’s motion for inter partes review of the Deep Green Wireless Patent, and on August 13, 2018 the PTAB heard oral arguments from each party. On December 17, 2018, the PTAB issued its final decision regarding the claims at issue in the Deep Green Wireless Litigation, in which it determined that all challenged claims of the ‘714 patent are obvious and unpatentable. Plaintiff failed to timely file an appeal to the PTAB by the January 16, 2019 deadline. Plaintiff filed its Notice of Appeal to the Federal Circuit on February 19, 2019 and the Company filed a Notice of Appeal on the same date to preserve its right to challenge the PTAB’s final decision concerning combinations of prior art that the PTAB determined did not render the ‘714 patent obvious and unpatentable. If the Federal Circuit rules in favor of the Company on appeal, the Deep Green Wireless Litigation should be dismissed.

Based on the Company’s current knowledge, and as confirmed by the PTAB’s final decision, the Company has determined that the amount of any material loss or range of any losses that is reasonably possible to result from the Deep Green Wireless Litigation is not estimable.

Dolemba Litigation

On September 4, 2018, plaintiff Scott Dolemba filed a putative class action complaint against the Company in the U.S. District Court for the Northern District of Illinois, Eastern Division, alleging violations of the Telephone Consumer Protection Act and the Illinois Consumer Fraud Act. The complaint seeks unspecified monetary damages, costs, attorneys’ fees and other appropriate relief. The parties are commencing the discovery phase. Based on the Company’s current knowledge, the Company has determined that the amount of any loss resulting from the Dolemba Litigation is not estimable.

Oregon Tax Litigation

On August 30, 2016, the Oregon Department of Revenue (the “DOR”) issued tax assessments against the Company for the Oregon Emergency Communications Tax (the “Tax”), which the DOR alleges Ooma should have collected from its subscribers in Oregon and remitted to the DOR during the period starting on January 1, 2013 and ending on March 31, 2016 (collectively, the “Assessments”). On November 28, 2016, the Company filed a complaint in the Oregon Tax Court, asserting that the Assessments against the Company is in violation of applicable Oregon law and are barred by the United States Constitution, and asking the Oregon Tax Court to abate the Assessments in full (the “Complaint”, and such dispute, the “Oregon Tax Litigation”). On February 10, 2017, the DOR filed an answer to the Complaint, and during April 2017, the Company voluntarily participated in an informal discovery process by providing certain information and documents to the DOR. The Company filed a motion for summary judgment on September 29, 2017, and on December 13, 2017 the Court heard oral arguments from the parties regarding such motion.

On March 27, 2018, the Magistrate Division of the Oregon Tax Court issued its decision denying the Company’s motion, and granting the DOR’s motion for summary judgment. Notwithstanding such decision, the Company believes that the Commerce Clause of the United States Constitution bars the application of the Tax and the Assessments to the Company, since the Company has no employees, property or other indicia of a “substantial nexus” with the State of Oregon. On June 12, 2018, the Company filed an appeal of the Magistrate Divisions decision and on October 12, 2018, the Company filed its motion for summary judgment with the Regular Division of the Oregon Tax Court. The DOR filed its motion for summary judgment on November 16, 2018. On January 17, 2019, the Regular Division of the Oregon Tax Court heard oral argument on the parties’ cross motions for summary judgment, and no decision has been issued. The Company will continue to vigorously litigate the Complaint in pursuit of the full abatement of the Assessments. However, litigation is unpredictable and there can be no assurances that the Company will obtain a favorable final outcome or that it will be able to avoid further unfavorable interim rulings in the course of litigation that may significantly add to the expense of its defense and could result in substantial costs and diversion of resources.

During fiscal 2019, the Company paid $0.6 million to the State of Oregon in connection with the Oregon Tax Litigation, of which $0.3 million was charged to the consolidated statement of operations as the amount of loss deemed probable and reasonably estimable, and $0.3 million was recorded as a receivable in other current assets on the consolidated balance sheet for interest and penalties that the Company expects will be refunded.

Secure Cam Litigation

On May 2, 2018, plaintiff Secure Cam, LLC filed a complaint in the U.S. District Court for the Northern District of California against the Company’s wholly-owned subsidiary, Butterfleye, Inc., alleging infringement of four United States patents (No. 8,531,555, No. 8,350,928, No. 8,836,819 and No. 9,363,408) (the “Secure Cam Litigation”). On September 28, 2018, the Company and Secure Cam, LLC settled the complaint for an immaterial amount and the complaint was voluntarily dismissed with prejudice.

Securities Litigation

On January 14, 2016, Michael Barnett filed a purported stockholder class action in the San Mateo County Superior Court of the State of California (Case No. CIV536959) against the Company, certain of its officers and directors, and certain of the underwriters of the Company’s IPO on July 17, 2015. Since that time two additional purported class actions making substantially the same allegations against the same defendants were filed, and on May 18, 2016, all three complaints were combined into a “consolidated complaint” filed in the same court (the “Securities Litigation”). The consolidated complaint purports to be brought on behalf of all persons who purchased shares of common stock in the Company’s IPO in reliance upon the Registration Statement and Prospectus the Company filed with the SEC. The consolidated complaint alleges that the Company and the other defendants violated the Securities Act of 1933, as amended (the “Securities Act”) by issuing the Registration Statement and Prospectus, which the plaintiffs allege contained material misstatements and omissions in violation of Sections 11, 12(a)(2) and 15 of the Securities Act. The plaintiffs seek class certification, compensatory damages, attorneys’ fees and costs, rescission or a rescissory measure of damages, equitable and/or injunctive relief, and such other relief as the court may deem proper.

On November 29, 2017, the Superior Court dismissed the claims that were based on Sections 12(a)(2) and 15 of the Securities Act with prejudice, but denied the Company’s motion to stay the case pending the United States Supreme Court’s decision in Cyan v. Beaver Cnty. Emp. Ret.‘ Fund. On March 20, 2018, the United States Supreme Court published its decision in the Cyan case, holding that state courts have subject matter jurisdiction to hear claims brought under the Securities Act, such as the claims alleging violations of Section 11 of the Securities Act (the only remaining claims in the Securities Litigation) brought against the Company in the Superior Court. The parties are now engaged in the discovery phase of the litigation.

The Company believes the plaintiffs’ claims are without merit and the Company is vigorously defending against the Securities Litigation and will continue to do so. However, litigation is unpredictable and there can be no assurances that the Company will obtain a favorable final outcome or that it will be able to avoid unfavorable preliminary or interim rulings in the course of litigation that may significantly add to the expense of its defense and could result in substantial costs and diversion of resources.

Based on the Company’s current knowledge, the Company has determined that the amount of any material loss or range of any losses that is reasonably possible to result from the Securities Litigation is not estimable.

Indemnification

The Company enters into standard indemnification arrangements in the ordinary course of business. Pursuant to these arrangements, the Company indemnifies, holds harmless and agrees to reimburse the indemnified parties for losses suffered or incurred by the indemnified party, in connection with any trade secret, copyright, patent or other intellectual property infringement claim by any third party with respect to the Company’s technology. The term of these indemnification agreements is generally perpetual. The maximum potential amount of future payments the Company could be required to make under these agreements is not determinable because it involves claims that may be made against the Company in the future, but have not yet been made.

The Company has entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct of the individual. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has director and officer insurance coverage that reduces the Company’s exposure and enables the Company to recover a portion of any future amounts paid.

To date the Company has not incurred costs to defend lawsuits or settle claims related to these indemnification agreements. No liability associated with such indemnifications has been recorded to date.

Acquisitions and Divestitures

12 Months Ended

Jan. 31, 2019

Business Acquisitions And Divestitures [Abstract]

Acquisitions and Divestitures

Note 12: Acquisitions and Divestitures

Acquisition of Voxter, Inc.

On March 12, 2018, the Company completed its acquisition of Voxter, a privately-held provider of UCaaS offerings for mid-market and enterprise businesses.

The acquisition date fair value consideration transferred for Voxter was approximately $3.9 million, which consisted of the following (in thousands):

	Fair Value
Cash paid at closing	$	2,510
Common stock issued at closing		390
Holdback payable⁽¹⁾		780
Contingent consideration⁽²⁾		231
Total	$	3,911

⁽¹⁾ Amounts to be paid in cash after a one-year holdback period.

⁽²⁾ Fair value of deferred earn-out payments ($0.8 million gross) contingent upon the achievement of certain performance targets.

The final purchase price allocation included identifiable intangible assets of approximately $2.1 million, net assets acquired of approximately $0.4 million, deferred tax liabilities of approximately $0.4 million and residual goodwill of approximately $2.0 million, based on the best estimates of management. See Note 5: Goodwill and Acquired Intangible Assets above. Acquisition-related transaction costs charged to expense during fiscal 2019 were $0.4 million. The goodwill recognized was attributable primarily to expected synergies in the acquired technologies that may be leveraged by the Company in future Ooma Business offerings. Goodwill is not expected to be deductible for U.S. or Canadian income tax purposes.

The operating results of the acquired company have been included in the Company's consolidated financial statements from the date of acquisition. Actual and pro forma results of operations for the Voxter acquisition have not been presented because it does not have a material impact on the Company's consolidated results of operations.

Acquisition of Butterfleye, Inc.

On December 14, 2017, the Company completed its acquisition of Butterfleye, Inc., a privately-held company that offers intelligent, wire-free security cameras. The fair value of consideration transferred included $1.5 million cash as well as deferred earnout payments contingent upon the achievement of certain performance targets during the Company’s fiscal 2019. The fair market value and gross amount of the earn-out payments were estimated to be approximately $0.3 million and $0.9 million, respectively, at the time of acquisition (see Note 4: Fair Value Measurements above for additional information regarding fair value).

The final purchase price allocation included identifiable intangible assets of approximately $1.1 million, net liabilities assumed of approximately $0.1 million and residual goodwill of approximately $0.8 million, based on the best estimates of management. See Note 5: Goodwill and Acquired Intangible Assets above. Acquisition-related transaction costs charged to expense were not material. The goodwill recognized was attributable primarily to expected synergies in the acquired technologies that may be leveraged by the Company in future home security product offerings. Goodwill is not expected to be deductible for U.S. income tax purposes.

The operating results of the acquired company have been included in the Company's consolidated financial statements from the date of acquisition. Actual and pro forma results of operations for the Butterfleye acquisition have not been presented because it does not have a material impact on the Company's consolidated results of operations.

Sale of Business Promoter

On August 15, 2017, the Company completed the sale of its Business Promoter service to a third-party entity. The Company did not receive any cash proceeds nor did it recognize any losses or gains from this transaction. The Company is entitled to receive a quarterly earn-out for the next five years up to a maximum of $4.5 million, subject to certain quarterly thresholds. During fiscal 2019 and 2018, the Company recorded earn-outs of approximately $0.3 million and $0.2 million, respectively, as a reduction to general and administrative expense in its consolidated statement of operations.

Net Loss Per Share

12 Months Ended

Jan. 31, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

Note 13: Net Loss Per Share

Basic and diluted net loss per share of common stock is calculated by dividing the net loss allocable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per share of common stock is the same as basic net loss per share because the effects of potentially dilutive securities are antidilutive because the Company reported net losses for all periods presented.

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per share data):

	Fiscal Year Ended January 31,
	2019			2018			2017
Numerator
Net loss	$	(14,572	)	$	(13,121	)	$	(12,949	)
Denominator
Weighted-average common shares		19,799,781			18,570,128			17,490,448
Basic and diluted net loss per share	$	(0.74	)	$	(0.71	)	$	(0.74	)

Potentially dilutive securities of approximately 3.9 million, 4.1 million and 4.1 million were excluded from the computation of diluted net loss per share for fiscal 2019, 2018 and 2017, respectively. These dilutive securities included the Company’s RSUs, stock options and shares to be purchased under the ESPP.

Related Party Transaction

12 Months Ended

Jan. 31, 2019

Related Party Transaction

Note 14: Related Party Transactions

In October 2017, the Company entered into an office sublease agreement with Fiserv Solutions, LLC (“Fiserv”) to lease approximately 33,400 rentable square feet of an office building located in Sunnyvale, California, the Company’s new corporate headquarters. One of the members of the Company’s board of directors is also a current member of Fiserv’s board of directors. The Company incurred total rental and common area maintenance expenses of approximately $1.2 million and $0.2 million in fiscal 2019 and 2018, respectively, under this sublease agreement.

Significant Accounting Policies (Policies)

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Principles of Presentation and Consolidation

Secondary Public Offering

Revenue Recognition

Under Topic 606, the Company determines revenue recognition through the following steps:

•

identification of the contract(s) with a customer;

•

identification of the performance obligations in the contract;

•

determination of the transaction price;

•

allocation of the transaction price to the performance obligations in the contract; and

•

recognition of revenue when, or as, the Company satisfies a performance obligation

Revenue disaggregated by revenue source consisted of the following (in thousands):

	Fiscal Year Ended January 31,
	2019		2018		2017
Subscription and services revenue	$	116,429	$	101,999	$	91,127
Product and other revenue		12,802		12,491		13,397
Total revenue	$	129,231	$	114,490	$	104,524

Subscription and Service Revenue

Product and Other Revenue

Amounts billed to customers related to shipping and handling are classified as revenue. Shipping and handling costs are expensed as incurred and classified as cost of revenue.

Multiple performance obligations

Sales allowances

Cash Equivalents and Short-term Investments

Fair Value of Financial Instruments

▪

Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets.

▪

Level 2: Observable prices based on inputs not quoted in active markets but are corroborated by market data.

▪

Level 3: Unobservable inputs that are supported by little or no market activity

Concentration of Credit Risk

As of January 31, 2019 and 2018, one of the Company’s customers accounted for 15% and 10%, respectively, of the Company’s net accounts receivable balance.

Accounts Receivable

Inventories

Customer Acquisition Costs

Website Development Costs

Property and Equipment

Goodwill

Intangible Assets

Impairment of Long-Lived Assets

Research and Development

Advertising

Stock-Based Compensation

Income Taxes

Foreign Currency

Adopted Accounting Standards

The following tables summarize the impact of adopting Topic 606 on the Company’s consolidated statement of operations and balance sheet (in thousands, except per share amounts):

Statement of Operations:	Fiscal Year Ended January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Total revenue	$	129,231		$	(169	)	$	129,062
Total cost of revenue		52,740			(493	)		52,247
Gross profit		76,491			324			76,815
Sales and marketing expense		40,761			4,468			45,229
Net loss		(14,572	)		(4,144	)		(18,716	)
Net loss per share - basic and diluted		(0.74	)		(0.21	)		(0.95	)

Balance Sheet:	As of January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Accounts receivable, net	$	3,723		$	49		$	3,772
Other current assets ⁽¹⁾		5,450			308			5,758
Other assets ⁽²⁾		5,379			(3,387	)		1,992
Accrued expenses ⁽³⁾		19,048			(732	)		18,316
Deferred revenue		15,443			1,554			16,997
Accumulated deficit		(105,795	)		(3,852	)		(109,647	)

⁽¹⁾ Other current assets include deferred commissions and deferred inventory costs.

⁽²⁾Other assets include non-current deferred commissions.

⁽³⁾Accrued expenses include certain accrued sales incentives.

The adoption of the new standard did not have any impact on net cash flows for operating, investing and financing activities in the consolidated statements of cash flows.

Accounting Standards Not Yet Adopted

Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Summary of Revenue Disaggregated by Revenue Source

Revenue disaggregated by revenue source consisted of the following (in thousands):

	Fiscal Year Ended January 31,
	2019		2018		2017
Subscription and services revenue	$	116,429	$	101,999	$	91,127
Product and other revenue		12,802		12,491		13,397
Total revenue	$	129,231	$	114,490	$	104,524

Recent Accounting Standards (Tables)

12 Months Ended

Jan. 31, 2019

Topic 606

Summary of Impact of Adopting Topic 606 on Consolidated Statement of Operations and Balance Sheet

The following tables summarize the impact of adopting Topic 606 on the Company’s consolidated statement of operations and balance sheet (in thousands, except per share amounts):

Statement of Operations:	Fiscal Year Ended January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Total revenue	$	129,231		$	(169	)	$	129,062
Total cost of revenue		52,740			(493	)		52,247
Gross profit		76,491			324			76,815
Sales and marketing expense		40,761			4,468			45,229
Net loss		(14,572	)		(4,144	)		(18,716	)
Net loss per share - basic and diluted		(0.74	)		(0.21	)		(0.95	)

Balance Sheet:	As of January 31, 2019
	As Reported			Effect of Change			Balances without adoption of Topic 606
Accounts receivable, net	$	3,723		$	49		$	3,772
Other current assets ⁽¹⁾		5,450			308			5,758
Other assets ⁽²⁾		5,379			(3,387	)		1,992
Accrued expenses ⁽³⁾		19,048			(732	)		18,316
Deferred revenue		15,443			1,554			16,997
Accumulated deficit		(105,795	)		(3,852	)		(109,647	)

⁽¹⁾ Other current assets include deferred commissions and deferred inventory costs.

⁽²⁾Other assets include non-current deferred commissions.

⁽³⁾Accrued expenses include certain accrued sales incentives.

Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities at Fair Value

The Company’s financial assets and liabilities that are measured at fair value on a recurring basis by level within the fair value hierarchy were as follows (in thousands):

	Balance as of January 31, 2019								Balance as of January 31, 2018
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents:
Money market funds	$	5,951	$	—	$	—	$	5,951	$	554	$	—	$	—	$	554
Commercial paper		—		5,429		—		5,429		—		2,844		—		2,844
Total cash equivalents	$	5,951	$	5,429	$	—	$	11,380	$	554	$	2,844	$	—	$	3,398
Cash								3,990								1,085
Total cash and cash equivalents							$	15,370							$	4,483

Short-term investments:
U.S. government securities	$	11,087	$	—	$	—	$	11,088	$	20,867	$	—	$	—	$	20,867
Corporate debt securities		—		4,735		—		4,735		—		13,895		—		13,895
Commercial paper		—		8,253		—		8,253		—		9,272		—		9,272
U.S. agency securities		—		990		—		990		—		1,996		—		1,996
Asset-backed securities		—		2,187		—		2,187		—		1,277		—		1,277
Total short-term investments	$	11,087	$	16,165	$	—	$	27,253	$	20,867	$	26,440	$	—	$	47,307

Liabilities:
Contingent consideration	$	—	$	—	$	200	$	200	$	—	$	—	$	311	$	311
Total liabilities	$	—	$	—	$	200	$	200	$	—	$	—	$	311	$	311

Schedule of Changes in Level 3 Fair Value Category

Changes in the Level 3 fair value category for the periods presented were as follows (in thousands):

	Contingent
		Consideration
Balance at January 31, 2017		$	—
Add: contingent consideration from Butterfleye acquisition			311
Balance at January 31, 2018			311
Add: contingent consideration from Voxter acquisition			231
Changes in fair value			(342	)
Balance at January 31, 2019		$	200

Schedule of Short-term Investments by Contractual Maturities

The following table classifies the Company’s short-term investments by contractual maturities (in thousands):

	As of January 31, 2019				As of January 31, 2018
	Amortized Value		Fair Value		Amortized Value		Fair Value
One year or less	$	27,263	$	27,253	$	43,227	$	43,172
Over one year and less than two years		—		—		4,164		4,135
Total	$	27,263	$	27,253	$	47,391	$	47,307

Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Carrying Value of Intangible Assets Other than Goodwill

The gross value, accumulated amortization and carrying values of intangible assets were as follows (in thousands):

		As of January 31, 2019							As of January 31, 2018
	Estimated life (in years)	Gross Value		Accumulated Amortization			Carrying Value		Gross Value		Accumulated Amortization			Carrying Value
Developed technology	5	$	2,716	$	(1,121	)	$	1,595	$	1,568	$	(630	)	$	938
Customer relationships	5		902		(157	)		745		—		—			—
Trade name	5		451		(166	)		285		262		(81	)		181
Patents and licenses	3.8-7		714		(704	)		10		714		(698	)		16
User relationships	N/A		—		—			—		458		(458	)		—
Total amortizable assets			4,783		(2,148	)		2,635		3,002		(1,867	)		1,135
In-process R&D ⁽¹⁾	N/A		—		—			—		157		—			157
Total intangible assets		$	4,783	$	(2,148	)	$	2,635	$	3,159	$	(1,867	)	$	1,292

Schedule of Estimated Future Amortization Expense

Fiscal Years Ending January 31,	Total
2020		691
2021		642
2022		638
2023		612
2024 and thereafter		52
Total	$	2,635

Balance Sheet Components (Tables)

12 Months Ended

Jan. 31, 2019

Balance Sheet Components [Abstract]

Components of Inventories

The following sections and tables provide details of selected balance sheet items (in thousands):

Inventories

	As of January 31,
	2019		2018
Finished goods	$	7,567	$	5,517
Raw materials		2,550		562
Total inventory	$	10,117	$	6,079

Components of Other Current Assets

Other current assets

	As of January 31,
	2019		2018
Prepaid expenses	$	2,681	$	1,921
Deferred sales commissions ⁽¹⁾		1,081		—
Deferred inventory costs ⁽¹⁾		334		1,061
Other current assets		1,354		1,415
Total other current assets	$	5,450	$	4,397

⁽¹⁾ Changes in deferred inventory costs and deferred sales commissions were attributable to the Company’s adoption of Topic 606 on February 1, 2018.

See Note 2: Significant Accounting Policies above.

Components of Property and Equipment, Net

Property and equipment, net

		As of January 31,
	Estimated Life (in years)	2019			2018
Computer equipment and software	3-4	$	7,109		$	7,180
Website development costs	2		3,323			2,579
Machinery and equipment	3-5		1,190			1,473
Office furniture and fixtures	5		114			88
Leasehold improvements	Shorter of estimated life or remaining lease term		449			651
Total property and equipment		$	12,185		$	11,971
Less: accumulated depreciation and amortization			(7,622	)		(7,239	)
Property and equipment, net		$	4,563		$	4,732

Components of Other Long-Term Assets

Other long-term assets

	As of January 31,
	2019		2018
Deferred sales commissions⁽¹⁾	$	3,387	$	—
Convertible note receivable		1,300		—
Other assets		692		336
Total other assets	$	5,379	$	336

⁽¹⁾ Changes in deferred sales commissions were attributable to the Company’s adoption of Topic 606 on February 1, 2018. See Note 2: Significant Accounting Policies above.

Components of Accrued Expenses

Accrued expenses

	As of January 31,
	2019		2018
Payroll and related expenses	$	7,926	$	5,423
Regulatory fees and taxes		5,645		5,239
Acquisition-related consideration		925		353
Other		4,552		3,762
Total accrued expenses	$	19,048	$	14,777

Components of Deferred Revenue

Deferred revenue

	As of January 31,
	2019		2018
Deferred revenue:
Subscription and services	$	15,682	$	14,568
Product and other		68		1,416
Total deferred revenue		15,750		15,984
Less: current deferred revenue		15,443		15,556
Noncurrent deferred revenue included in other long-term liabilities	$	307	$	428

Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2019

Equity [Abstract]

Schedule of Common Stock Reserved for Issuance

The Company had shares of common stock reserved for issuance as follows:

	As of January 31,
	2019		2018
Restricted stock units outstanding		1,925,311		1,966,895
Options to purchase common stock		1,691,272		1,801,232
Shares available for future issuance under stock plans		1,141,482		928,024
Shares reserved under ESPP		249,933		598,033
Warrants to purchase common stock		1,107		4,881
Total shares reserved for issuance		5,009,105		5,299,065

Summarizes of Stock Option Activities

Stock option activity for fiscal 2019 was as follows:

				Weighted Average		Weighted Average		Aggregate
	Number of			Exercise Price		Contractual Term		Intrinsic Value
	Shares			Per Share		(in years)		(in thousands)
Balance as of January 31, 2018		1,801,232		$	6.09		6.2	$	8,270
Granted		100,000		$	11.75
Exercised		(185,535	)		6.03
Canceled		(24,425	)		9.48
Balance as of January 31, 2019		1,691,272		$	6.39		5.4	$	14,755
Vested and exercisable - January 31, 2019		1,525,946		$	5.86		5.1	$	14,112

Summarizes of Restricted Stock Units Activities

RSU activity for fiscal 2019 and 2018 was as follows:

	Number of Shares			Weighted Average Grant-Date Fair Value Per Share
Balance as of January 31, 2017		1,859,196		$	7.65
Granted		1,222,605			10.17
Vested		(936,869	)		8.54
Canceled		(178,037	)		8.77
Balance as of January 31, 2018		1,966,895			8.85
Granted		1,176,647			11.96
Vested		(921,533	)		9.12
Canceled		(296,698	)		9.70
Balance as of January 31, 2019		1,925,311		$	10.49

Stock-Based Compensation (Tables)

12 Months Ended

Jan. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Total Stock-Based Compensation Recognized for Stock-Based Awards in Consolidated Statements of Operations

Total stock-based compensation recognized for stock-based awards in the consolidated statements of operations was as follows (in thousands):

	Fiscal Year Ended January 31,
	2019		2018		2017
Cost of revenue	$	920	$	1,102	$	1,026
Sales and marketing		1,442		1,818		1,438
Research and development		3,762		3,972		3,586
General and administrative		4,246		4,029		3,722
Total stock-based compensation expense	$	10,370	$	10,921	$	9,772

Summary of Assumptions Used to Estimate Fair Value of Employee Stock Options Grants and Employee Stock Purchase Plan Using Black-Scholes Option Pricing Model

The fair value of employee stock options and ESPP was estimated using the Black–Scholes model with the following assumptions, as applicable:

	Fiscal Year Ended January 31,
	2019	2018	2017
Stock Options:
Expected volatility	43%	47%	NA
Expected term (in years)	6.1	6.1	NA
Risk-free interest rate	2.7	1.8%-2.1%	NA
Dividend yield	NA	NA	NA

	Fiscal Year Ended January 31,
	2019	2018	2017
ESPP:
Expected volatility	39%-56%	35%-41%	37%-50%
Expected term (in years)	0.5-2.0	0.5-2.0	0.5-2.0
Risk-free interest rate	2.0%-2.8%	0.9%-1.4%	0.5%-1.0%
Dividend yield	NA	NA	NA

Income Taxes (Tables)

12 Months Ended

Jan. 31, 2019

Income Tax Disclosure [Abstract]

Reconciliation of Income Tax Benefit

Income tax benefit differed from the amount computed by applying the federal blended statutory income tax rate of 21% to pretax loss as a result of the following (in thousands):

	Fiscal Year Ended January 31,
	2019			Rate			2018			Rate			2017			Rate
Federal tax at statutory rate	$	(3,141	)		21	%	$	(4,316	)		33	%	$	(4,403	)		34	%
Impact of U.S. tax law change		58			—			11,667			(89	)%		—			—
Change in valuation allowance		5,603			(37	)%		(6,786	)		52	%		4,881			(38	)%
Research and development credit		(2,155	)		14	%		(1,080	)		8	%		(738	)		6	%
State taxes		(494	)		3	%		(396	)		3	%		(230	)		2	%
Stock-based compensation		(991	)		7	%		387			(3	)%		387			(3	)%
Permanent tax adjustment		843			(6	)%		527			(4	)%		103			(1	)%
Impact of foreign operations		(105	)		1	%		—			—			—			—
Other		(2	)		—			—			—			—			—
Total	$	(384	)		(3	)%	$	3			0	%	$	—			0	%

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the Company’s deferred tax assets and liabilities related to the following (in thousands):

	As of January 31,
	2019			2018
Deferred tax assets:
Accruals and reserves	$	1,549		$	2,281
Stock-based compensation		1,071			1,030
Intangible assets amortization		(21	)		61
Deferred revenue		73			125
Net operating loss carry forwards		26,277			22,047
Tax credit carryover		5,977			3,810
Gross deferred tax assets		34,926			29,354
Valuation allowance		(34,309	)		(28,657	)
Net deferred tax assets	$	617		$	697
Deferred tax liabilities:
Acquired intangible assets	$	(607	)	$	(313	)
Fixed assets depreciation		(154	)		(384	)
Gross deferred tax liabilities	$	(761	)	$	(697	)
Total deferred tax liabilities	$	(144	)	$	—

Summary of Activity Related to UTBs

The following table summarizes the activity related to UTBs (in thousands):

Balance at January 31, 2017	$	1,815
Increase related to prior year positions		139
Increase related to current year tax positions		871
Balance at January 31, 2018		2,825
Increase related to prior year positions		8
Increase related to current year tax positions		1,592
Balance at January 31, 2019	$	4,425

Commitments and Contingencies (Tables)

12 Months Ended

Jan. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Minimum Rental Commitments under Non-Cancelable Operating Leases

As of January 31, 2019, future minimum rental commitments under non-cancelable operating leases were as follows (in thousands):

Fiscal Year Ending January 31,	Operating Leases
2020	$	1,983
2021		1,408
2022		917
2023		266
2024 and thereafter		49
Total	$	4,623

Acquisitions and Divestitures (Tables)

12 Months Ended

Jan. 31, 2019

Business Acquisitions And Divestitures [Abstract]

Schedule of Fair Value of Consideration Transferred

The acquisition date fair value consideration transferred for Voxter was approximately $3.9 million, which consisted of the following (in thousands):

	Fair Value
Cash paid at closing	$	2,510
Common stock issued at closing		390
Holdback payable⁽¹⁾		780
Contingent consideration⁽²⁾		231
Total	$	3,911

⁽¹⁾ Amounts to be paid in cash after a one-year holdback period.

⁽²⁾ Fair value of deferred earn-out payments ($0.8 million gross) contingent upon the achievement of certain performance targets.

Net Loss Per Share (Tables)

12 Months Ended

Jan. 31, 2019

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per share data):

	Fiscal Year Ended January 31,
	2019			2018			2017
Numerator
Net loss	$	(14,572	)	$	(13,121	)	$	(12,949	)
Denominator
Weighted-average common shares		19,799,781			18,570,128			17,490,448
Basic and diluted net loss per share	$	(0.74	)	$	(0.71	)	$	(0.74	)

Overview and Basis of Presentation - Additional Information (Details) $ / shares in Units, shares in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares	Jan. 31, 2017 USD ($) $ / shares shares	Jan. 31, 2019 USD ($) Segment	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($) $ / shares
Stockholders Equity Note Disclosure [Line Items]
Reportable segments \| Segment			1
Proceeds from offering \| $			$ 2,886,000	$ 1,918,000	$ 1,477,000
Secondary Offering
Stockholders Equity Note Disclosure [Line Items]
Proceeds from offering \| $	$ 0	$ 0
Common Stock \| Secondary Offering
Stockholders Equity Note Disclosure [Line Items]
Common stock shares sold \| shares	3.3	3.3
Common stock shares sold, public offering price \| $ / shares	$ 8.85	$ 8.65			$ 8.65
Common Stock \| Overallotment Option
Stockholders Equity Note Disclosure [Line Items]
Common stock shares sold \| shares	0.4

Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Jan. 31, 2019 USD ($) Source Country Customer	Jan. 31, 2018 USD ($) Country Customer	Jan. 31, 2017 USD ($) Country Customer
Significant Accounting Policies [Line Items]
Number of sources of revenue \| Source	2
Number of countries outside United States represented 10% or more of total revenue \| Country	0	0	0
Number of customers that individually exceeded 10% of revenue \| Customer	0	0	0
Allowances for product returns and customer sales incentives	$ 600,000	$ 600,000
Allowances for doubtful accounts	100,000	400,000
Deferred commission costs	4,500,000
Deferred commission costs current	1,100,000
Deferred commission costs non current	3,400,000
Amortization expense	700,000
Impairment loss in relation to deferred commission costs capitalized	0
Impairment of goodwill	0	0	$ 0
Impairment of long-lived assets	0
Advertising costs	300,000	300,000	300,000
Interest expense or penalties related to unrecognized tax benefits	0	0	0
Sales and marketing
Significant Accounting Policies [Line Items]
Advertising costs	$ 13,700,000	14,400,000	16,500,000
Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	3 years
Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	5 years
Website Development Costs
Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	2 years
Development costs capitalized	$ 800,000	$ 600,000	$ 400,000
Customer relationships
Significant Accounting Policies [Line Items]
Estimated life (in years)	5 years
Accounts Receivable \| Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage	15.00%	10.00%
Ooma Residential \| Revenue
Significant Accounting Policies [Line Items]
Concentration risk, percentage	68.00%	71.00%	72.00%
Ooma Business \| Revenue
Significant Accounting Policies [Line Items]
Concentration risk, percentage	28.00%	22.00%	16.00%

Significant Accounting Policies - Summary of Revenue Disaggregated by Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue	$ 129,231	$ 114,490	$ 104,524
Subscription and services revenue
Disaggregation Of Revenue [Line Items]
Total revenue	116,429	101,999	91,127
Product and other revenue
Disaggregation Of Revenue [Line Items]
Total revenue	$ 12,802	$ 12,491	$ 13,397

Recent Accounting Standards - Additional Information (Details) - USD ($)		12 Months Ended
	Feb. 01, 2018	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Feb. 01, 2019
Significant Accounting Policies [Line Items]
Net cash provided by or used in operating activities		$ (3,926,000)	$ 3,173,000	$ 385,000
Net cash provided by or used in investing activities		14,853,000	$ (2,155,000)	$ (22,969,000)
Minimum \| Subsequent Event
Significant Accounting Policies [Line Items]
Right-of-use leased assets					$ 3,800,000
Lease liability					3,800,000
Maximum \| Subsequent Event
Significant Accounting Policies [Line Items]
Right-of-use leased assets					4,800,000
Lease liability					$ 4,800,000
Topic 606
Significant Accounting Policies [Line Items]
Net decrease in deferred revenue	$ 1,000,000
Net increase to accumulated deficit due to adoption of new standard	300,000
Adjustment \| Topic 606
Significant Accounting Policies [Line Items]
Deferred inventory costs and other related accounts	$ 1,300,000
Net cash provided by or used in operating activities		0
Net cash provided by or used in investing activities		$ 0

Recent Accounting Standards - Summary of Impact of Adopting Topic 606 on Consolidated Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue	$ 129,231	$ 114,490	$ 104,524
Total cost of revenue	52,740	46,398	45,195
Gross profit	76,491	68,092	59,329
Sales and marketing	40,761	37,302	33,768
Net loss	$ (14,572)	$ (13,121)	$ (12,949)
Basic and diluted	$ (0.74)	$ (0.71)	$ (0.74)
Adjustment \| Topic 606
Disaggregation Of Revenue [Line Items]
Total revenue	$ (169)
Total cost of revenue	(493)
Gross profit	324
Sales and marketing	4,468
Net loss	$ (4,144)
Basic and diluted	$ (0.21)
Balances Without Adoption of Topic 606 \| Topic 606
Disaggregation Of Revenue [Line Items]
Total revenue	$ 129,062
Total cost of revenue	52,247
Gross profit	76,815
Sales and marketing	45,229
Net loss	$ (18,716)
Basic and diluted	$ (0.95)

Recent Accounting Standards - Summary of Impact of Adopting Topic 606 on Consolidated Statement of Balance Sheet (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Disaggregation Of Revenue [Line Items]
Accounts receivable, net	$ 3,723	$ 2,858
Other current assets	5,450	4,397
Other assets	5,379	336
Accrued expenses	19,048	14,777
Deferred revenue	15,443	15,556
Accumulated deficit	(105,795)	$ (90,931)
Adjustment \| Topic 606
Disaggregation Of Revenue [Line Items]
Accounts receivable, net	49
Other current assets	308
Other assets	(3,387)
Accrued expenses	(732)
Deferred revenue	1,554
Accumulated deficit	(3,852)
Balances Without Adoption of Topic 606 \| Topic 606
Disaggregation Of Revenue [Line Items]
Accounts receivable, net	3,772
Other current assets	5,758
Other assets	1,992
Accrued expenses	18,316
Deferred revenue	16,997
Accumulated deficit	$ (109,647)

Fair Value Measurements - Schedule of Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Assets:
Total cash and cash equivalents	$ 15,370	$ 4,483
Total short-term investments	27,253	47,307
Liabilities:
Total liabilities	200	311
U.S. Government Securities
Assets:
Total short-term investments	11,088	20,867
Commercial Paper
Assets:
Total short-term investments	8,253	9,272
Corporate Debt Securities
Assets:
Total short-term investments	4,735	13,895
U.S. Agency Securities
Assets:
Total short-term investments	990	1,996
Asset-backed Securities
Assets:
Total short-term investments	2,187	1,277
Cash
Assets:
Total cash and cash equivalents	3,990	1,085
Cash Equivalents
Assets:
Total cash and cash equivalents	11,380	3,398
Cash Equivalents \| Commercial Paper
Assets:
Total cash and cash equivalents	5,429	2,844
Cash Equivalents \| Money Market Funds
Assets:
Total cash and cash equivalents	5,951	554
Level 1
Assets:
Total short-term investments	11,087	20,867
Level 1 \| U.S. Government Securities
Assets:
Total short-term investments	11,087	20,867
Level 1 \| Cash Equivalents
Assets:
Total cash and cash equivalents	5,951	554
Level 1 \| Cash Equivalents \| Money Market Funds
Assets:
Total cash and cash equivalents	5,951	554
Level 2
Assets:
Total short-term investments	16,165	26,440
Level 2 \| Commercial Paper
Assets:
Total short-term investments	8,253	9,272
Level 2 \| Corporate Debt Securities
Assets:
Total short-term investments	4,735	13,895
Level 2 \| U.S. Agency Securities
Assets:
Total short-term investments	990	1,996
Level 2 \| Asset-backed Securities
Assets:
Total short-term investments	2,187	1,277
Level 2 \| Cash Equivalents
Assets:
Total cash and cash equivalents	5,429	2,844
Level 2 \| Cash Equivalents \| Commercial Paper
Assets:
Total cash and cash equivalents	5,429	2,844
Level 3
Liabilities:
Total liabilities	200	311
Contingent Consideration
Liabilities:
Total liabilities	200	311
Contingent Consideration \| Level 3
Liabilities:
Total liabilities	$ 200	$ 311

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Fair Value Disclosures [Abstract]
Financial assets, level 2 to level 1 transfers, amount	$ 0	$ 0
Financial assets, level 1 to level 2 transfers, amount	0	0
Financial liabilities, level 2 to level 1 transfers, amount	0	0
Financial liabilities, level 1 to level 2 transfers, amount	0	$ 0
Investments other-than-temporarily impaired	$ 0

Fair Value Measurement - Schedule of Changes in Level 3 Fair Value Category (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 12, 2018	Jan. 31, 2019	Jan. 31, 2018
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance		$ 311
Add: contingent consideration from acquisition		231	$ 311
Changes in fair value		(342)
Ending Balance		200	311
Voxter Communications Inc.
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Add: contingent consideration from acquisition	$ 780
Contingent Consideration
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance		311
Ending Balance		200	311
Level 3
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance		311
Ending Balance		200	311
Level 3 \| Contingent Consideration
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance		311
Changes in fair value		(342)
Ending Balance		200	311
Level 3 \| Contingent Consideration \| Butterfleye, Inc.
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Add: contingent consideration from acquisition			$ 311
Level 3 \| Contingent Consideration \| Voxter Communications Inc.
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Add: contingent consideration from acquisition		$ 231

Fair Value Measurements - Schedule of Short-term Investments by Contractual Maturities (Details) - Short-term Investments - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
One year or less, Amortized Value	$ 27,263	$ 43,227
Over one year and less than two years, Amortized Value		4,164
Short-term Investments, Amortized Value	27,263	47,391
One year or less, fair value	27,253	43,172
Over one year and less than two years, fair value		4,135
Short-term Investments, Fair Value	$ 27,253	$ 47,307

Goodwill and Acquired Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2019	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Mar. 12, 2018
Finite Lived Intangible Assets [Line Items]
Goodwill			$ 3,898	$ 1,947
Amortization expense			$ 740	$ 313	$ 348
Voxter Communications Inc.
Finite Lived Intangible Assets [Line Items]
Goodwill						$ 2,000
Intangible assets recognized from acquisition	$ 2,100
Goodwill recognized from acquisition	$ 1,900
Increase in goodwill		$ 100

Goodwill and Acquired Intangible Assets - Summary of Carrying Values of Intangible Assets Other than Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross Value, Amortizable Intangible Assets	$ 4,783	$ 3,002
Accumulated Amortization, Amortizable Intangible Assets	(2,148)	(1,867)
Carrying Value, Amortizable Intangible Assets	2,635	1,135
Gross Value	4,783	3,159
Accumulated Amortization	(2,148)	(1,867)
Carrying Value	$ 2,635	1,292
In-process R&D
Finite Lived Intangible Assets [Line Items]
Carrying Value		157
Developed technology
Finite Lived Intangible Assets [Line Items]
Estimated life (in years)	5 years
Gross Value, Amortizable Intangible Assets	$ 2,716	1,568
Accumulated Amortization, Amortizable Intangible Assets	(1,121)	(630)
Carrying Value, Amortizable Intangible Assets	$ 1,595	938
Customer relationships
Finite Lived Intangible Assets [Line Items]
Estimated life (in years)	5 years
Gross Value, Amortizable Intangible Assets	$ 902
Accumulated Amortization, Amortizable Intangible Assets	(157)
Carrying Value, Amortizable Intangible Assets	$ 745
Trade name
Finite Lived Intangible Assets [Line Items]
Estimated life (in years)	5 years
Gross Value, Amortizable Intangible Assets	$ 451	262
Accumulated Amortization, Amortizable Intangible Assets	(166)	(81)
Carrying Value, Amortizable Intangible Assets	285	181
Patents and licenses
Finite Lived Intangible Assets [Line Items]
Gross Value, Amortizable Intangible Assets	714	714
Accumulated Amortization, Amortizable Intangible Assets	(704)	(698)
Carrying Value, Amortizable Intangible Assets	$ 10	16
Patents and licenses \| Minimum
Finite Lived Intangible Assets [Line Items]
Estimated life (in years)	3 years 9 months 18 days
Patents and licenses \| Maximum
Finite Lived Intangible Assets [Line Items]
Estimated life (in years)	7 years
User relationships
Finite Lived Intangible Assets [Line Items]
Gross Value, Amortizable Intangible Assets		458
Accumulated Amortization, Amortizable Intangible Assets		$ (458)

Goodwill and Acquired Intangible Assets - Schedule of Estimated Future Amortization Expense for Intangible Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
2020	$ 691
2021	642
2022	638
2023	612
2024 and thereafter	52
Carrying Value, Amortizable Intangible Assets	$ 2,635	$ 1,135

Balance Sheet Components - Components of Inventories (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Inventory Disclosure [Abstract]
Finished goods	$ 7,567	$ 5,517
Raw materials	2,550	562
Total inventory	$ 10,117	$ 6,079

Balance Sheet Components - Components of Other Current Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Prepaid Expense And Other Assets Current [Abstract]
Prepaid expenses	$ 2,681	$ 1,921
Deferred sales commissions	1,081
Deferred inventory costs	334	1,061
Other current assets	1,354	1,415
Total other current assets	$ 5,450	$ 4,397

Balance Sheet Components - Components of Property And Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Property Plant And Equipment [Line Items]
Total property and equipment	$ 12,185	$ 11,971
Less: accumulated depreciation and amortization	(7,622)	(7,239)
Property and equipment, net	4,563	4,732
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment	$ 7,109	7,180
Website Development Costs
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	2 years
Total property and equipment	$ 3,323	2,579
Machinery and Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	$ 1,190	1,473
Office Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	5 years
Total property and equipment	$ 114	88
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, estimated lifes	Shorter of estimated life or remaining lease term
Total property and equipment	$ 449	$ 651
Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	3 years
Minimum \| Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	3 years
Minimum \| Machinery and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	3 years
Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	5 years
Maximum \| Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	4 years
Maximum \| Machinery and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated life	5 years

Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Balance Sheet Components [Line Items]
Depreciation and amortization	$ 2.3	$ 2.0	$ 1.6
Deferred revenue recognized	14.2
Revenue expected to be recognized from remaining performance obligations	0.5
Global Telecomm Corporation \| Convertible Promissory Note
Balance Sheet Components [Line Items]
Investment in privately-held company	$ 1.3
Convertible promissory note, maturity period	18 months
Convertible promissory note, interest rate	10.00%

Balance Sheet Components - Components of Other Long-Term Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Other Assets Noncurrent [Abstract]
Deferred sales commissions	$ 3,387
Convertible note receivable	1,300
Other assets	692	$ 336
Total other assets	$ 5,379	$ 336

Balance Sheet Components - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Payables And Accruals [Abstract]
Payroll and related expenses	$ 7,926	$ 5,423
Regulatory fees and taxes	5,645	5,239
Acquisition-related consideration	925	353
Other	4,552	3,762
Total accrued expenses	$ 19,048	$ 14,777

Balance Sheet Components - Components of Deferred Revenue (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 15,750	$ 15,984
Less: current deferred revenue	15,443	15,556
Noncurrent deferred revenue included in other long-term liabilities	307	428
Subscription and Services
Deferred Revenue Arrangement [Line Items]
Deferred revenue	15,682	14,568
Product and Other
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 68	$ 1,416

Balance Sheet Components - Additional Information (Details 1) $ in Millions	Jan. 31, 2019 USD ($)
Balance Sheet Components [Line Items]
Revenue expected to be recognized from remaining performance obligations	$ 0.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-02-01
Balance Sheet Components [Line Items]
Revenue expected to be recognized from remaining performance obligations	$ 0.2
Revenue expected to be recognized from remaining performance obligations, period	12 months

Stockholders' Equity - Schedule of Common Stock Reserved for Issuance (Details) - shares	Jan. 31, 2019	Jan. 31, 2018
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	5,009,105	5,299,065
Warrants to purchase common stock
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	1,107	4,881
Options to purchase common stock
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	1,691,272	1,801,232
Shares available for future issuance under stock plans
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	1,141,482	928,024
Shares reserved under ESPP
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	249,933	598,033
Restricted stock units outstanding
Common Stock Reserved For Future Issuance [Line Items]
Total shares reserved for issuance	1,925,311	1,966,895

Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2019 USD ($) Peroid $ / shares shares	Jan. 31, 2018 USD ($) $ / shares shares	Jan. 31, 2017 USD ($) $ / shares shares
Stockholders Equity Note Disclosure [Line Items]
Stock option, granted	100,000
ESPP
Stockholders Equity Note Disclosure [Line Items]
Percentage of eligible compensation subject to plan limitation	15.00%
Employee stock purchase plan offering period	24 months
Number of purchase periods \| Peroid	4
Purchase periods	6 months
Purchase price of common stock as percentage of fair market value	85.00%
Number of shares of common stock issued under ESPP	300,000	300,000	200,000
Weighted purchase price of shares of common stock under ESPP \| $ / shares	$ 6.82	$ 5.48	$ 5.01
Stock Options
Stockholders Equity Note Disclosure [Line Items]
Employee stock option expiration period	10 years
Aggregate intrinsic value of vested options exercised \| $	$ 1,300	$ 300	$ 1,300
Weighted-average grant date fair value of options granted \| $ / shares	$ 5.28	$ 4.81
Stock option, granted			0
Stock Options \| Maximum
Stockholders Equity Note Disclosure [Line Items]
Employee stock option vesting period	5 years
Restricted Stock Units (RSUs)
Stockholders Equity Note Disclosure [Line Items]
Payment for shares of common stock withheld for tax withholdings on vesting of RSUs \| $	$ 2,926	$ 2,443	$ 1,588
Restricted Stock Units (RSUs) \| Maximum
Stockholders Equity Note Disclosure [Line Items]
Employee stock option vesting period	4 years
Restricted Stock Units (RSUs) \| Minimum
Stockholders Equity Note Disclosure [Line Items]
Employee stock option vesting period	1 year

Stockholders' Equity - Summarizes of Stock Option Activities (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Number of Shares
Number of Shares, Beginning balance	1,801,232
Number of Shares, Granted	100,000
Number of Shares, Exercised	(185,535)
Number of Shares, Canceled	(24,425)
Number of Shares, Ending balance	1,691,272	1,801,232
Number of Shares, Vested and exercisable	1,525,946
Weighted Average Exercise Price Per Share
Weighted Average Exercise Price Per Share, Beginning balance	$ 6.09
Weighted Average Exercise Price Per Share, Granted	11.75
Weighted Average Exercise Price Per Share, Exercised	6.03
Weighted Average Exercise Price Per Share, Canceled	9.48
Weighted Average Exercise Price Per Share, Ending balance	6.39	$ 6.09
Weighted Average Exercise Price Per Share, Vested and exercisable	$ 5.86
Weighted Average Contractual Term
Weighted Average Contractual Term	5 years 4 months 24 days	6 years 2 months 12 days
Weighted Average Contractual Term, Vested and exercisable	5 years 1 month 6 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$ 14,755	$ 8,270
Aggregate Intrinsic Value, Vested and exercisable	$ 14,112

Stockholders' Equity - Summarizes of Restricted Stock Units Activities (Details) - Restricted Stock Units (RSUs) - $ / shares	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Number of Shares
Number of Shares, RSUs Beginning Balance	1,966,895	1,859,196
Number of Shares, Granted	1,176,647	1,222,605
Number of Shares, Vested	(921,533)	(936,869)
Number of Shares, Canceled	(296,698)	(178,037)
Number of Shares, RSUs Ending Balance	1,925,311	1,966,895
Weighted Average Grant-Date Fair Value Per Share
Weighted Average Grant-Date Fair Value Per Share, Beginning Balance	$ 8.85	$ 7.65
Weighted Average Grant-Date Fair Value Per Share, Granted	11.96	10.17
Weighted Average Grant-Date Fair Value Per Share, Vested	9.12	8.54
Weighted Average Grant-Date Fair Value Per Share, Canceled	9.70	8.77
Weighted Average Grant-Date Fair Value Per Share, Ending Balance	$ 10.49	$ 8.85

Stock-Based Compensation - Total Stock-Based Compensation Recognized for Stock-Based Awards in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	$ 10,370	$ 10,921	$ 9,772
Cost of revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	920	1,102	1,026
Sales and marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	1,442	1,818	1,438
Research and development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	3,762	3,972	3,586
General and administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation	$ 4,246	$ 4,029	$ 3,722

Stock-Based Compensation - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Income tax benefit related to stock-based compensation expense	$ 0	$ 0	$ 0
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized share-based compensation expense related to unvested stock option grants	$ 20,200,000
Stock-based compensation expenses recognized on straight line basis offering period	2 years 6 months
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized share-based compensation expense related to unvested stock option grants	$ 20,200,000
Stock-based compensation expenses recognized on straight line basis offering period	2 years 6 months
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized share-based compensation expense related to unvested stock option grants	$ 20,200,000
Stock-based compensation expenses recognized on straight line basis offering period	2 years 6 months

Stock-Based Compensation - Assumptions Used to Estimate Fair Value of Employee Stock Options Grants and Employee Stock Purchase Plan Using Black-Scholes Option Pricing Model (Details)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, minimum	39.00%	35.00%	37.00%
Expected volatility, maximum	56.00%	41.00%	50.00%
Risk-free interest rate, minimum	2.00%	0.90%	0.50%
Risk-free interest rate, maximum	2.80%	1.40%	1.00%
ESPP \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 months	6 months	6 months
ESPP \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	2 years	2 years	2 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility	43.00%	47.00%
Expected term (in years)	6 years 1 month 6 days	6 years 1 month 6 days
Risk-free interest rate	2.70%
Stock Options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate		1.80%
Stock Options \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate		2.10%

Income Taxes - Reconciliation of Income Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Federal tax at statutory rate	$ (3,141)	$ (4,316)	$ (4,403)
Impact of U.S. tax law change	58	11,667
Change in valuation allowance	5,603	(6,786)	4,881
Research and development credit	(2,155)	(1,080)	(738)
State taxes	(494)	(396)	(230)
Stock-based compensation	(991)	387	387
Permanent tax adjustment	843	527	$ 103
Impact of foreign operations	(105)
Other	(2)
Total	$ (384)	$ 3
Federal tax at statutory rate, Rate	21.00%	33.00%	34.00%
Impact of U.S. tax law change, Rate		(89.00%)
Change in valuation allowance, Rate	(37.00%)	52.00%	(38.00%)
Research and development credit, Rate	14.00%	8.00%	6.00%
State taxes, Rate	3.00%	3.00%	2.00%
Stock-based compensation, Rate	7.00%	(3.00%)	(3.00%)
Permanent tax adjustment, Rate	(6.00%)	(4.00%)	(1.00%)
Impact of foreign operations, Rate	1.00%
Total, Rate	(3.00%)	0.00%	0.00%

Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Deferred tax assets:
Accruals and reserves	$ 1,549	$ 2,281
Stock-based compensation	1,071	1,030
Intangible assets amortization	(21)	61
Deferred revenue	73	125
Net operating loss carry forwards	26,277	22,047
Tax credit carryover	5,977	3,810
Gross deferred tax assets	34,926	29,354
Valuation allowance	(34,309)	(28,657)	$ (34,900)
Net deferred tax assets	617	697
Deferred tax liabilities:
Acquired intangible assets	(607)	(313)
Fixed assets depreciation	(154)	(384)
Gross deferred tax liabilities	(761)	$ (697)
Total deferred tax liabilities	$ (144)

Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Apr. 30, 2020
Income Tax [Line Items]
Federal statutory income tax rate	21.00%	33.00%	34.00%
Deferred tax assets	$ 34,926,000	$ 29,354,000
Performance based compensation and commission exceptions to tax deduction limitation	1,000,000
Valuation allowance for deferred tax assets	34,309,000	28,657,000	$ 34,900,000
Net deferred tax asset, change in valuation allowance	$ 5,700,000	(6,200,000)
Net operating loss carryforwards, expired	2030
Unrecognized tax benefits	$ 4,425,000	2,825,000	1,815,000	$ 4,400,000
Interest expense or penalties related to unrecognized tax benefits	$ 0	$ 0	$ 0
Research and Development
Income Tax [Line Items]
Federal tax credit, expired	2030
Federal
Income Tax [Line Items]
Net operating loss carryforwards	$ 99,000,000
Federal \| Research and Development
Income Tax [Line Items]
Tax credit carryforwards	5,800,000
State
Income Tax [Line Items]
Net operating loss carryforwards	71,800,000
State \| Research and Development
Income Tax [Line Items]
Tax credit carryforwards	5,200,000
Stock Awards Limitation
Income Tax [Line Items]
Deferred tax assets	$ 100,000
Maximum
Income Tax [Line Items]
Federal statutory income tax rate		35.00%

Income Taxes - Summary of Activity Related to UTBs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Income Tax Disclosure [Abstract]
Beginning Balance	$ 2,825	$ 1,815
Increase related to prior year positions	8	139
Increase related to current year tax positions	1,592	871
Ending Balance	$ 4,425	$ 2,825

Retirement Plan - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Employee contributions maximum amount	$ 18,500
Employee contributions maximum amount, over fifty years of age.	$ 24,500
Employer contribution, percent of match	50.00%
Employee maximum contribution percent of deferred salary amount	6.00%
Vesting percentage	100.00%
Compensation costs	$ 700,000	$ 500,000	$ 400,000

Commitments and Contingencies - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Commitments And Contingencies Disclosure [Line Items]
Rent expense	$ 2,500,000	$ 1,900,000	$ 2,000,000
Non-cancelable purchase commitments	4,200,000
Accrued liabilities for loss contingencies	0
Tax litigation amount	600,000
Cumulative charges of litigation loss	300,000
Other current assets
Commitments And Contingencies Disclosure [Line Items]
Amount of receivables in other current assets	$ 300,000

Commitments and Contingencies - Minimum Rental Commitments under Non-Cancelable Operating Leases (Details) $ in Thousands	Jan. 31, 2018 USD ($)
Operating Leases
2020	$ 1,983
2021	1,408
2022	917
2023	266
2024 and thereafter	49
Total	$ 4,623

Acquisitions and Divestitures - Additional Information (Details) - USD ($)				12 Months Ended
	Mar. 12, 2018	Dec. 14, 2017	Aug. 15, 2017	Jan. 31, 2019	Jan. 31, 2018
Business Acquisition [Line Items]
Goodwill				$ 3,898,000	$ 1,947,000
Business Promoter \| Third Party Entity
Business Acquisition [Line Items]
Proceeds from disposition of business			$ 0
Quarterly earn-out payment receivable period			5 years
Quarterly earn-out payment receivable, maximum			$ 4,500,000
Proceeds from disposition of business quarterly earn-outs				300,000	$ 200,000
Voxter Communications Inc.
Business Acquisition [Line Items]
Acquisition completion date	Mar. 12, 2018
Fair value of consideration transferred	$ 3,911,000
Intangible assets	2,100,000
Net assets acquired	400,000
Deferred tax liabilities	400,000
Goodwill	2,000,000
Acquisition-related transaction costs				$ 400,000
Earn-out payments, fair market value	231,000
Earn-out payments, gross amount	$ 800,000
Butterfleye, Inc.
Business Acquisition [Line Items]
Fair value of consideration transferred		$ 1,500,000
Intangible assets		1,100,000
Goodwill		800,000
Earn-out payments, fair market value		300,000
Earn-out payments, gross amount		900,000
Net liabilities assumed		$ 100,000

Acquisitions and Divestitures - Schedule of Fair Value of Consideration Transferred (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 12, 2018	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Business Acquisition [Line Items]
Common stock issued at closing		$ 390		$ 165
Holdback payable		$ 231	$ 311
Voxter Communications Inc.
Business Acquisition [Line Items]
Cash paid at closing	$ 2,510
Common stock issued at closing	390
Holdback payable	780
Contingent consideration	231
Total	$ 3,911

Acquisitions and Divestitures - Schedule of Fair Value of Consideration Transferred (Parenthetical) (Details) $ in Millions	Mar. 12, 2018 USD ($)
Voxter Communications Inc.
Business Acquisition [Line Items]
Earn-out payments, gross amount	$ 0.8

Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Numerator
Net loss	$ (14,572)	$ (13,121)	$ (12,949)
Denominator
Weighted-average common shares	19,799,781	18,570,128	17,490,448
Basic and diluted net loss per share	$ (0.74)	$ (0.71)	$ (0.74)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Net Loss Per Share - Additional Information (Details) - shares shares in Millions	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Earnings Per Share [Abstract]
Potentially dilutive securities excluded from the computation of diluted net loss per share	3.9	4.1	4.1

Related Party Transaction - Additional Information (Details) - Fiserv Solutions, LLC $ in Millions	12 Months Ended
	Jan. 31, 2019 USD ($)	Jan. 31, 2018 USD ($)	Oct. 31, 2017 ft²
Related Party Transaction [Line Items]
Lease rentable space of office building \| ft²			33,400
Total rental and common area maintenance expenses \| $	$ 1.2	$ 0.2