Xactly (XTLY) 10-K 12 Apr 17 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Jan. 31, 2017	Mar. 31, 2017	Jul. 31, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	XTLY
Entity Registrant Name	Xactly Corp
Entity Central Index Key	1,322,554
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 Common Stock, Shares Outstanding		31,875,121
Entity Public Float			$ 246,425,183

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Current assets:
Cash and cash equivalents	$ 15,010	$ 48,027
Short-term marketable securities	26,534
Restricted cash, short term	102	286
Accounts receivable, net	26,447	20,278
Prepaid expenses and other current assets	4,105	3,219
Total current assets	72,198	71,810
Property and equipment, net	9,134	8,410
Goodwill	6,384	6,384
Other long-term assets	280	280
Total assets	87,996	86,884
Current liabilities:
Accounts payable	946	2,362
Accrued expenses	8,355	9,512
Debt, current portion	8,981	8,981
Deferred revenue, current portion	53,375	41,183
Total current liabilities	71,657	62,038
Debt, less current portion	4,346	6,826
Other long-term liabilities	3,329	4,257
Deferred revenue, less current portion	3,486	3,327
Total liabilities	82,818	76,448
Commitments and contingencies (note 8)
Stockholders’ equity:
Preferred stock, $0.001 par value; 20,000,000 shares authorized as of January 31, 2017 and 2016; no shares issued or outstanding as of January 31, 2017 and 2016
Common stock, $0.001 par value; 1,000,000,000 shares authorized as of January 31, 2017 and 2016; 31,519,134 and 29,542,537 shares issued and outstanding as of January 31, 2017 and 2016, respectively	32	30
Additional paid-in capital	162,781	151,064
Accumulated other comprehensive loss	(243)	(180)
Accumulated deficit	(157,392)	(140,478)
Total stockholders’ equity	5,178	10,436
Total liabilities and stockholders’ equity	$ 87,996	$ 86,884

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jan. 31, 2017	Jan. 31, 2016
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	31,519,134	29,542,537
Common stock, shares outstanding	31,519,134	29,542,537

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Revenue:
Subscription services	$ 72,994	$ 59,211	$ 47,309
Professional services	22,467	16,763	13,802
Total revenue	95,461	75,974	61,111
Cost of revenue:
Subscription services	16,993	15,722	11,717
Professional services	20,386	15,680	13,325
Total cost of revenue	37,379	31,402	25,042
Gross profit	58,082	44,572	36,069
Operating expenses:
Research and development	18,210	15,650	11,867
Sales and marketing	40,187	34,836	28,877
General and administrative	15,900	14,502	10,087
Amortization of intangibles	0	0	707
Total operating expenses	74,297	64,988	51,538
Operating loss	(16,215)	(20,416)	(15,469)
Other income (expense):
Interest expense	(501)	(6,021)	(3,087)
Loss on extinguishment of debt		(1,524)
Decrease (increase) in fair value of preferred stock warrant liabilities		3,542	309
Other income (expense), net	43	(1)	(20)
Total other expense	(458)	(4,004)	(2,798)
Loss before income taxes	(16,673)	(24,420)	(18,267)
Income tax expense	241	299	265
Net loss	$ (16,914)	$ (24,719)	$ (18,532)
Net loss per share attributable to common stockholders:
Basic and diluted	$ (0.55)	$ (1.33)	$ (6.69)
Weighted-average number of shares used in computing net loss per share attributable to common stockholders:
Basic and diluted	30,593	18,545	2,769

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (16,914)	$ (24,719)	$ (18,532)
Change in fair value of marketable securities adjustments	(30)
Other comprehensive income (loss)—foreign currency translation adjustments	(33)	(84)	(10)
Comprehensive loss	$ (16,977)	$ (24,803)	$ (18,542)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Series F Convertible Preferred Stock	Series B Convertible Preferred Stock	Convertible Preferred Stock	Convertible Preferred StockSeries F Convertible Preferred Stock	Convertible Preferred StockSeries B Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Additional Paid-in CapitalSeries F Convertible Preferred Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning Balance at Jan. 31, 2014	$ (17,318)			$ 75,454			$ 3	$ 4,538		$ (86)	$ (97,227)
Beginning Balance, Shares at Jan. 31, 2014				16,999,844			2,645,470
Issuance of stock, net of issuance costs		$ 8,362			$ 8,362
Issuance of stock, Shares					864,728
Issuance of warrants for Series F convertible preferred stock					$ (878)				$ 878
Exercise of stock options	348							348
Exercise of stock options, Shares							230,231
Issuance of common stock upon release of restricted stock units (RSUs), shares							6,250
Exercise of warrant for convertible preferred stock and reclassification from liability to equity, value			$ 80			$ 80
Exercise of warrant for convertible preferred stock and reclassification from liability to equity, shares						7,399
Stock-based compensation	1,658							1,658
Other comprehensive loss	(10)									(10)
Net loss	(18,532)										(18,532)
Ending Balance at Jan. 31, 2015	(25,412)			$ 83,018			$ 3	7,422		(96)	(115,759)
Ending Balance, Shares at Jan. 31, 2015				17,871,971			2,881,951
Conversion of convertible preferred stock to common stock upon initial public offering				$ (83,018)			$ 18	83,000
Conversion of convertible preferred stock to common stock upon initial public offering, Shares				(17,871,971)			17,871,971
Issuance of stock, net of issuance costs	54,546						$ 8	54,538
Issuance of stock, Shares							7,909,125
Reclassification of convertible preferred stock warrants upon initial public offering	2,343							2,343
Tax payments related to the exercise of stock options	(1,570)							(1,570)
Donation of common stock	498							498
Donation of common stock, Shares							50,000
Exercise of warrants	39							39
Exercise of warrants, Shares							25,853
Exercise of stock options	938						$ 1	937
Exercise of stock options, Shares							803,637
Stock-based compensation	3,857							3,857
Other comprehensive loss	(84)									(84)
Net loss	(24,719)										(24,719)
Ending Balance at Jan. 31, 2016	10,436						$ 30	151,064		(180)	(140,478)
Ending Balance, Shares at Jan. 31, 2016							29,542,537
Common stock issued under stock incentive plans	1,768						$ 1	1,767
Common stock issued under stock incentive plans, Shares							569,449
Tax payments related to restricted stock units	(1,571)							(1,571)
Exercise of warrants	581							581
Exercise of warrants, Shares							180,692
Exercise of stock options	$ 2,530						$ 1	2,529
Exercise of stock options, Shares	1,184,903						1,226,456
Stock-based compensation	$ 8,411							8,411
Other comprehensive loss	(63)									(63)
Net loss	(16,914)										(16,914)
Ending Balance at Jan. 31, 2017	$ 5,178						$ 32	$ 162,781		$ (243)	$ (157,392)
Ending Balance, Shares at Jan. 31, 2017							31,519,134

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Common Stock
Issuance costs	$ 4,298
Series F Convertible Preferred Stock
Issuance costs		$ 138

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Cash flows from operating activities:
Net loss	$ (16,914)	$ (24,719)	$ (18,532)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,825	3,133	1,972
Amortization of intangible assets	0	0	707
Allowance for doubtful accounts	200
Loss on extinguishment of debt		1,524
Amortization of debt issuance costs	22	3,512	771
Amortization of investments	15
Stock-based compensation	8,411	3,857	1,658
Donation of common stock to XactlyOne Foundation		498
Income from change in fair value of warrant liabilities		(3,542)	(309)
Loss from disposal on fixed assets	52	245	21
Facility exit costs		693
Changes in operating assets and liabilities:
Accounts receivable	(6,369)	(3,106)	(2,657)
Prepaid expenses and other current assets	(816)	(926)	(536)
Other long-term assets			107
Accounts payable	(1,699)	310	78
Accrued expenses	(1,120)	1,964	845
Deferred revenue	12,351	10,367	4,612
Other long-term liabilities	(964)	(174)	(125)
Net cash used in operating activities	(3,006)	(6,364)	(11,388)
Cash flows from investing activities:
Purchases of property and equipment	(4,325)	(4,298)	(3,115)
Purchases of marketable securities	(27,951)
Proceeds from maturities of marketable securities	1,300
Restricted cash	184		(129)
Net cash used in investing activities	(30,792)	(4,298)	(3,244)
Cash flows from financing activities:
Proceeds from line of credit			5,010
Proceeds from principal on term debt, net of issuance costs		9,937	9,795
Payments of principal on term debt	(2,500)	(26,033)
Principal payments under capital lease obligations	(2)	(3)	(465)
Proceeds from exercise of stock options	2,530	938	348
Proceeds from issuance of common stock for ESPP	1,768
Tax payments related to the exercise of stock options and restricted stock units	(1,571)	(1,570)
Payment of deferred initial public offering costs		(2,732)	(1,566)
Proceeds from initial public offering		58,844
Net cash provided by financing activities	806	39,418	21,509
Effect of exchange rate changes on cash and cash equivalents	(25)	(54)	(4)
Net increase (decrease) in cash and cash equivalents	(33,017)	28,702	6,873
Cash and cash equivalents at beginning of period	48,027	19,325	12,452
Cash and cash equivalents at end of period	15,010	48,027	19,325
Cash paid during the period for:
Interest, net	489	2,393	1,802
Income taxes	230	164	126
Noncash financing and investing activities:
Accrued equipment purchases	551	268	106
Leasehold improvements for deferred rent		2,275	1,100
Issuance of warrants for debt issuance costs			3,633
Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from exercise of warrants		$ 37	25
Series F Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from the issuance of Series F convertible preferred stock, net of issuance costs			8,362
Noncash financing and investing activities:
Issuance of warrants for Series F convertible stock			878
Series B Convertible Preferred Stock
Noncash financing and investing activities:
Reclassification upon exercise of warrant for Series B convertible preferred stock			$ 55
Common Stock
Cash flows from financing activities:
Proceeds from exercise of warrants	$ 581

Description of the Business and

Description of the Business and Summary of Significant Accounting Policies	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Description of the Business and Summary of Significant Accounting Policies	Note 1. Description of the business and summary of significant accounting policies Description of business Xactly Corporation (the Company) was incorporated in Delaware in March 2005. The Company is a provider of enterprise-class, cloud-based incentive compensation solutions for employee and sales performance management. The Company’s customers leverage these solutions to optimize incentive compensation and drive behavior by automating manual processes, streamlining workflows, providing visibility to users and delivering actionable analyses and insights. The Company’s solutions are delivered through a scalable, secure cloud-based platform that allows for fast innovation benefiting all customers while keeping their information secure. The Company is headquartered in San Jose, California. The Company’s fiscal year end is January 31 and its fiscal quarters end on April 30, July 31, October 31 and January 31. Initial Public Offering On July 1, 2015, the Company completed its initial public offering (IPO) in which it sold 7,909,125 shares of common stock, which included 1,055,625 shares to cover over-allotments, to the public at $8.00 per share. The total gross proceeds from the offering were approximately $63,273,000. After deducting underwriting discounts and commissions, the aggregate net proceeds received totaled approximately $58,844,000, before offering costs of approximately $4,298,000. Upon the closing of the IPO, all shares of the Company’s then-outstanding convertible preferred stock automatically converted into an aggregate of 17,871,971 shares of common stock. In addition, upon the IPO, the Company’s outstanding convertible preferred stock warrants became warrants to purchase common stock and the Company’s outstanding preferred stock warrant liabilities became indexed to the Company's common stock and accordingly have been reclassified to additional paid-in capital. On June 11, 2015, a four-to-one reverse stock split of the Company's then-outstanding common stock and convertible preferred stock was effected in connection with the IPO. All information throughout these consolidated financial statements and notes to the consolidated financial statements relating to common stock, warrants to purchase common stock, stock awards, preferred stock, warrants to purchase convertible preferred stock and earnings per share has been retroactively adjusted to give effect to the four-to-one reverse stock split, without any change in the par value per share. Fractional shares resulting from the reverse stock split have been rounded down to the closest whole share. Basis of presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC). The accompanying consolidated financial statements include the accounts of Xactly Corporation and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The Company operates in a dynamic high-technology industry and believes that changes in any of the following areas could have a material adverse effect on the Company’s future financial position, results of operations, or cash flows; trends in new technologies and industry standards; market acceptance of the Company’s services; certain strategic relationships; litigation or claims against the Company based on intellectual property, patent, services, regulatory or other factors; and the Company’s ability to attract and retain employees necessary to support its growth. Use of estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Significant items subject to such estimates and assumptions include, but are not limited to, revenue and sales allowances, allowance for doubtful accounts, determination of the fair value of short-term marketable securities, determination of the fair value of common and preferred stock (prior to IPO), preferred stock warrant liabilities (prior to IPO), stock-based compensation, contingent liabilities and accounting for income taxes. These estimates and assumptions are based on management’s best judgment. Management evaluates its estimates and assumptions using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Revenue recognition The Company’s revenue is derived from subscription services and professional services arrangements. Subscription services include revenue from the Company’s incentive compensation solutions. Subscriptions are typically sold through non-cancellable contracts with one to three year terms. Subscription fees are primarily based on the number of subscribers per customer per month. Customers are not permitted to take possession of the Company’s software. Professional services include revenue from assisting customers in implementing the Company’s solution and optimizing its use. These services include application configuration, system integration, data transformation and automation services, education and training services and strategic services. Professional services are billed predominantly on a time-and-materials basis with some fixed-fee arrangements. Professional services are performed by the Company directly or by third-party professional service providers engaged by the Company. Customers may also choose to perform these services themselves or engage their own third-party service providers. The Company recognizes revenue when all of the following conditions are met: • persuasive evidence of an arrangement exists; • the service is being provided to the customer or delivery has occurred; • the fee is fixed or determinable; and • collection of the fees are reasonably assured The Company’s subscription services are recognized ratably over the term of the arrangement as delivered. Professional services are recognized as the services are performed using the proportional-performance method. Performance is based on hours of work performed, or upon project completion for certain fixed-fee contracts. The Company also enters into multiple-element arrangements that include both subscription and professional services. When subscription services arrangements involve multiple elements that qualify as separate units of accounting, the Company allocates arrangement consideration to all deliverables based on the relative stand-alone selling price method in accordance with the selling price hierarchy, which includes: (i) vendor-specific objective evidence (VSOE) if available; (ii) third-party evidence (TPE) if VSOE is not available; and (iii) best estimate of selling price (BESP) if neither VSOE nor TPE is available. Revenue allocated to each deliverable, limited to the amount not contingent on future performance, is then recognized when the basic revenue recognition criteria are met for the respective deliverable. The Company determines whether VSOE can be established based on its historical pricing and discounting practices for the specific service when sold separately. In determining VSOE, the Company requires that a substantial majority of the selling prices for these services fall within a reasonably narrow pricing range. The Company limits its assessment of VSOE for each element to either the price charged when the same element is sold separately or the price established by management, having the relevant authority to do so, for an element not yet sold separately. The Company has not yet been able to establish VSOE for its subscription or professional services because it has not historically priced its offerings within a sufficiently narrow range. When VSOE cannot be established, the Company applies judgment with respect to whether it can establish a selling price based on TPE. TPE is determined based on third-party prices for similar deliverables when sold separately. Generally, the Company’s pricing strategy differs from that of its peers and its offerings contain a significant level of differentiation such that the comparable pricing of services with similar functionality cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor services’ selling prices are on a stand-alone basis. As a result, the Company has not been able to establish selling prices based on TPE. When the Company is unable to establish a selling price using VSOE or TPE, the Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. The Company estimates BESP for services by considering multiple factors including, but not limited to, prices it charges for similar offerings, market conditions, competitive landscape, and pricing practices. The Company currently uses BESP in order to allocate the selling price to its deliverables. Deferred revenue Deferred revenue primarily consists of billings or payments received in advance of revenue recognition from the Company’s subscription service and is recognized as the revenue recognition criteria are met. The Company generally invoices its customers annually in advance. Accordingly, the deferred revenue balance does not include the unbilled portion of subscription agreements. Deferred revenue also includes certain deferred professional service fees, which are recognized as revenue over the period services are provided. Also included in deferred revenue is a sales allowance for estimated future customer sales credits of $110,000 as of January 31, 2017 and 2016 that was recorded as a reduction in revenue. This amount is estimated based on historical sales credit activity. Cash and cash equivalents and short-term investments The Company considers all highly liquid investments with original maturities of three months or less at the time of purchase to be cash equivalents. Cash equivalents as of January 31, 2017 and 2016 consisted of money market funds. The Company determines the appropriate classification of investment securities at the time of purchase and re-evaluates such designation as of each balance sheet date. As of January 31, 2017, all investment securities were designated as "available-for-sale" and recorded at fair value. The Company classifies its marketable securities as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. The Company may sell these securities at any time for use in current operations or for other purposes, such as consideration for acquisitions, even if they have not yet reached maturity. As a result, the Company classifies its investments, including securities with maturities beyond twelve months as “current assets” in the accompanying consolidated balance sheets. Marketable securities on the consolidated balance sheets consist of securities with original maturities at the time of purchase greater than three months and the remaining securities are reflected in cash and cash equivalents. When the Company has determined that an other-than-temporary decline in fair value has occurred, the amount of the decline is recognized in earnings. Gains and losses are determined using the specific identification method. Restricted cash The Company had restricted cash amounts with restrictions of less than one year. As of January 31, 2017 and 2016, the Company had money market accounts with a balance of $0 and $184,000, respectively, in lieu of a deposit for a facility lease. As of January 31, 2017 and 2016, the Company had a principal balance under certificates of deposit of $102,000 in lieu of a deposit for its corporate credit cards and merchant services. Cash amounts with restrictions of longer than one year are classified as long-term and included in other long-term assets. As of January 31, 2017 and 2016, this consisted of money market accounts with a balance of $129,000 held in lieu of deposits for facilities leases. Concentrations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. Cash equivalents consist of money market funds, which are invested through financial institutions in the United States. Such deposits may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. Most of the Company’s customers are located in the United States. No single customer accounted for more than 10% of accounts receivable as of January 31, 2017 or 2016. No single customer accounted for more than 10% of revenue for the fiscal year ended January 31, 2017, 2016 or 2015. Accounts receivable Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts for estimated losses inherent in its accounts receivable portfolio. In establishing the required allowance, management considers historical losses adjusted to take into account current market conditions and customers’ financial condition, the amount of receivables in dispute, and the current receivables aging and current payment patterns. The Company reviews its allowance for doubtful accounts monthly. Past-due balances over 90 days and over a specified amount are reviewed individually for collectability. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The Company does not have any off-balance-sheet credit exposure related to its customers. Below is a summary of the changes in allowance for doubtful accounts for the fiscal years ended January 31, 2017, 2016 and 2015: Balance at Beginning of period Provision, net of recoveries Write-offs Balance at end of period (in thousands) Fiscal year ended January 31, 2015 $ 40 $ 88 $ (88 ) $ 40 Fiscal year ended January 31, 2016 40 10 (10 ) 40 Fiscal year ended January 31, 2017 40 499 (299 ) 240 Fair value of financial instruments The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and debt approximate fair value. Property and equipment Property and equipment are recorded at cost less accumulated depreciation and amortization. Equipment and software under capital leases are stated at the present value of minimum lease payments. Depreciation on property and equipment is calculated using the straight-line method over the estimated useful lives of the related assets, generally two to five years. Leasehold improvements are amortized over the shorter of the estimated useful lives of the leased assets or the lease term. The following table summarizes the useful lives of the Company’s major assets: Asset category Useful life Computer software and equipment 3 years Furniture and fixtures 2 to 5 years Leasehold improvements 2 to 6 years Intangible assets Intangible assets consist of acquired customer relationships, intellectual property and contract rights acquired in business combinations and are recorded at fair value, less accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives ranging from two to six years. Amortization of intellectual property and contract rights are included in cost of revenue. Amortization of acquired customer relationships is included in operating expenses. Impairment of long-lived assets, including goodwill Long-lived assets such as property and equipment and intangible assets subject to depreciation and amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability is measured by comparison of the carrying amount of the asset or asset group to the future net undiscounted cash flows expected to be generated by the asset or asset group. If such assets are considered impaired, an impairment loss would be recognized as the amount by which the carrying amount of the asset exceeds the fair value of the asset or asset group. Costs in excess of fair value of tangible and other identifiable intangible assets acquired and liabilities assumed in a business combination are recorded as goodwill, which is tested for impairment using a two-step approach. The Company evaluates goodwill, at a minimum, on an annual basis in the fourth quarter, and whenever events or changes in circumstances suggest that the carrying amount may not be recoverable. Impairment of goodwill is tested at the reporting unit level by comparing the reporting unit’s carrying amount, including goodwill, to its fair value. For purposes of this analysis, the Company considers itself a single reporting unit. If the carrying amount of the reporting unit exceeds its fair value, goodwill is considered impaired and a second step is performed to measure the amount of the impairment loss, if any. To the extent the carrying value of the reporting unit is zero or negative, the Company would perform the second step of the impairment test to measure the amount of any impairment loss if it is more likely than not that a goodwill impairment exists. As of January 31, 2017 and 2016, the carrying value of the Company’s single reporting unit was positive. There were no impairment losses on long-lived assets, including goodwill, for the fiscal years ended January 31, 2017, 2016 or 2015. Stock-based compensation The Company accounts for stock-based payment transactions in which the Company receives employee services in exchange for equity instruments, based on the estimated fair values of the Company’s equity instruments on the date of grant. For stock options and purchase rights granted under the ESPP, the Company uses the Black-Scholes option pricing model to estimate the fair value of the awards. The fair value of each restricted stock unit (“RSU”) is equal to the market value of our common stock on the date of grant. Stock-based compensation expense is recognized on a straight-line basis over the requisite service period. The Company believes that the fair value of stock options granted to non-employees is more reliably measured than the fair value of the services received. As such, the fair value of the unvested portion of the options granted to non-employees is re-measured each period. The resulting increase in value, if any, is recognized as expense during the period the related services are rendered. See Note 10 for further information on stock-based compensation. Income taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the consolidated 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 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. The measurement of deferred tax assets is reduced, if necessary, by a valuation allowance for any tax benefits for which future realization is not more likely than not to be realized. As of January 31, 2017 and 2016, the Company has a full valuation allowance against its net deferred tax assets. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest related to unrecognized tax benefits as part of income tax expense. See Note 11 for further information on income taxes. Taxes collected from customers We net taxes collected from customers against those remitted to government authorities in our consolidated financial statements. Accordingly, taxes collected from customers are not reported as revenue. Foreign currency The functional currency of each foreign subsidiary is its respective local currency. Accordingly, all assets and liabilities related to these operations are translated into U.S. dollars at the current exchange rates at the end of each period and recorded as part of a separate component of stockholders’ equity and reported in the statement of comprehensive loss. Revenue and expenses are translated at average exchange rates in effect during the period. Foreign currency transaction gains and losses are included in the results of operations and have not been material to date. As of January 31, 2017 and 2016, no foreign currency transactions were hedged. Comprehensive loss The Company reports by major components, and as a single total, the change in its net assets during the period from nonowner sources. Comprehensive loss consists of net loss and other comprehensive loss, which includes certain changes in equity that are excluded from net loss. The only difference between the Company’s net loss and items of comprehensive loss are effects of foreign exchange rate translation adjustments. Advertising expenses Advertising is expensed as incurred as a component of sales and marketing expenses in the consolidated statements of operations. Advertising expense was approximately $1,337,000, $1,362,000 and $1,131,000 for the fiscal years ended January 31, 2017, 2016 and 2015, respectively. Software development costs The Company’s software and website development costs are accounted for under the guidance for internal use software and website development costs. The costs incurred in the preliminary stages of development are expensed as incurred. Once an application has reached the development stage, if: (1) the costs are direct and incremental and (2) management has determined that it is probable that the project will be completed and the software will be used to perform the function intended, internal and external costs are capitalized until the application is substantially complete and ready for its intended use. Because the majority of the Company’s development efforts are categorized in the operation stage (post-implementation) or do not result in additional functionality, no costs have been capitalized to date. These costs are included in the accompanying consolidated statements of operations as research and development expenses. Net loss per share Basic earnings per share is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method. The Company applies the two-class method to calculate basic and diluted net loss per share of common stock as shares of convertible preferred stock are participating securities due to their dividend rights. The two-class method is an earnings allocation method under which earnings per share is calculated for common stock considering a participating security’s rights to undistributed earnings as if all such earnings had been distributed during the period. The Company’s participating securities are not included in the computation of net loss per share in periods of net loss because the preferred stockholders have no contractual obligation to participate in losses. Segment information The Company has determined that the chief executive officer is the chief operating decision maker. The Company’s chief executive officer reviews financial information presented on a consolidated basis for purposes of assessing performance and making decisions on how to allocate resources. Accordingly, the Company has determined that it operates in a single reporting segment. Recently Adopted Accounting Standards In September 2015, the FASB issued ASU 2015-16 Simplifying the Accounting for Measurement-Period Adjustments In April 2015, the FASB issued ASU 2015-05 Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements—Going Concern

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Jan. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Note 2. Balance sheet components Accounts receivable, net consisted of the following: January 31, 2017 2016 (in thousands) Accounts receivable $ 25,458 $ 19,378 Unbilled accounts receivable 1,229 940 Allowance for doubtful accounts (240 ) (40 ) Accounts receivable, net $ 26,447 $ 20,278 Accrued expenses consisted of: January 31, 2017 2016 (in thousands) Accrued compensation and benefits $ 4,528 $ 5,148 Accrued expenses 1,626 1,909 Deferred rent 965 948 Accrued legal settlement — 500 Sales tax payable 432 460 Other 804 547 Total accrued expenses $ 8,355 $ 9,512 Other long-term liabilities consisted of: January 31, 2017 2016 (in thousands) Deferred rent $ 3,124 $ 4,088 Deferred tax liabilities 205 169 Total other long-term liabilities $ 3,329 $ 4,257

Intangible Assets, Net

Intangible Assets, Net	12 Months Ended
	Jan. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets, Net	Note 3. Intangible assets, net The following tables provide a summary of the carrying amounts of purchased intangible assets: January 31, 2017 and 2016 Weighted average amortization period Gross amount Accumulated amortization Net amount (in thousands) Customer relationships 6 yrs $ 4,350 $ (4,350 ) $ — Intellectual property 3 yrs 310 (310 ) — Contract rights 2 yrs 1,380 (1,380 ) — Total $ 6,040 $ (6,040 ) $ — There was no amortization expense for the fiscal years ended January 31, 2017 and 2016. Amortization expense was $707,000 for the fiscal year ended January 31, 2015.

Marketable Securities

Marketable Securities	12 Months Ended
	Jan. 31, 2017
Investments Debt And Equity Securities [Abstract]
Marketable Securities	Note 4. Marketable Securities As of January 31, 2017, marketable securities consisted of the following (in thousands): Amortized Unrealized Unrealized Aggregate Cost Gains Losses Fair Value Certificates of deposit $ 5,240 $ — $ (3 ) $ 5,237 Commercial paper 2,495 — (2 ) 2,493 Corporate bonds 16,827 — (24 ) 16,803 U.S. government agencies 2,002 — (1 ) 2,001 Money market funds 1,433 — — 1,433 Total $ 27,997 $ — $ (30 ) $ 27,967 Included in cash and cash equivalents $ 1,433 $ — $ — $ 1,433 Included in short-term marketable securities $ 26,564 $ — $ (30 ) $ 26,534 At January 31, 2016 the Company did not have any marketable securities. The following table summarizes the estimated fair value of our investments in marketable debt securities, accounted for as available-for-sale securities and classified by the contractual maturity date of the securities (in thousands): January 31, 2017 Due in one year $ 18,086 Due in one year through two years 3,213 Total $ 21,299 The Company classifies its marketable securities as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. The Company may sell these securities at any time for use in current operations or for other purposes, such as consideration for acquisitions, even if they have not yet reached maturity. As a result, the Company classifies its investments, including securities with maturities beyond twelve months as “current assets” in the accompanying consolidated balance sheets. Marketable securities on the consolidated balance sheets consist of securities with original maturities at the time of purchase greater than three months and the remaining securities are reflected in cash and cash equivalents. The Company considers the declines in market value of its marketable securities investment portfolio to be temporary in nature. When evaluating an investment for other-than-temporary impairment the Company reviews factors such as the length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates and the Company’s intent to sell, or whether it is more likely than not it will be required to sell the investment before recovery of the investment’s cost basis. As of January 31, 2017, the Company does not consider any of its investments to be other-than-temporarily impaired.

Fair Value Measurements of Asse

Fair Value Measurements of Assets and Liabilities	12 Months Ended
	Jan. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements of Assets and Liabilities	Note 5. Fair value measurements of assets and liabilities The Company measures certain financial assets and liabilities at fair value on a recurring basis. The Company determines fair value based upon the exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, as determined by either the principal market or the most advantageous market. Inputs used in the valuation techniques to derive fair values are classified based on a three-level hierarchy. These levels are: Level 1 Quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs. Level 2 Observable prices that are based on inputs not quoted on active markets, but corroborated by market data. Level 3 Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs. Observable inputs are based on market data obtained from independent sources. The Company’s valuation techniques used to measure the fair value of money market funds were derived from quoted prices in active markets for identical assets or liabilities. The valuation techniques used to measure the fair value of the Company’s debt instruments, all of which have counterparties with high credit ratings, were valued based on quoted market prices or model-driven valuations using significant inputs derived from or corroborated by observable market data. In accordance with the fair value accounting requirements, companies may choose to measure eligible financial instruments and certain other items at fair value. The Company has not elected the fair value option for any eligible financial instruments. The following summarizes assets and liabilities that are measured at fair value on a recurring basis, by level, within the fair value hierarchy: January 31, 2017 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents—money market funds $ 12,260 $ — $ — $ 12,260 Restricted cash—money market funds 129 — — 129 Restricted cash—bank certificates of deposit 102 — — 102 Certificates of deposit — 5,236 — 5,236 Commercial paper — 2,493 — 2,493 Corporate bonds — 16,803 — 16,803 U.S. government agencies — 2,002 — 2,002 Total $ 12,491 $ 26,534 $ — $ 39,025 January 31, 2016 Level 1 Level 2 Level 3 Total (In thousands) Assets: Cash equivalents—money market funds $ 46,387 $ — $ — $ 46,387 Restricted cash—money market funds 129 — — 129 Restricted cash—bank certificates of deposit 102 — — 102 Total $ 46,618 $ — $ — $ 46,618

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Jan. 31, 2017
Property Plant And Equipment [Abstract]
Property and Equipment, Net	Note 6. Property and equipment, net Property and equipment, net consisted of the following: January 31, 2017 2016 (in thousands) Computer software and equipment $ 17,238 $ 12,830 Furniture and fixtures 776 752 Leasehold improvements 4,560 4,366 Construction in progress 36 348 Gross property and equipment 22,610 18,296 Less accumulated depreciation and amortization (13,476 ) (9,886 ) Property and equipment, net $ 9,134 $ 8,410 Depreciation and amortization expense for the fiscal years ended January 31, 2017, 2016 and 2015 was $3,825,000, $3,133,000 and $1,972,000, respectively.

Debt

Debt	12 Months Ended
	Jan. 31, 2017
Debt Disclosure [Abstract]
Debt	Note 7. Debt The Company has an Amended and Restated Loan and Security Agreement (Amended SVB Agreement) with Silicon Valley Bank (SVB). The Company also had an Amended and Restated Loan and Security Agreement (Wellington Agreement) with Wellington Financial LP (Wellington). The SVB Agreement In 2012, the Company amended and replaced its existing SVB credit facility with an Amended and Restated Loan and Security Agreement (SVB Agreement) consisting of a $7,000,000 revolving line of credit with a maturity date of August 2014 and a $3,000,000 term loan facility. The line of credit carried a variable annual interest rate equal to the greater of prime plus 2.25% or 5.5%. The term loan consisted of an advance of $1,500,000 at the effective date and an additional $1,500,000 advance in March 2013. The term loan carried a variable annual interest rate of prime plus 1.75% and required the Company to make monthly interest only payments for six months. Thereafter, the Company was required to make 30 equal monthly installments of principal and accrued interest, payable at the beginning of each month through the maturity date of August 2015 and March 2016, respectively. All of the Company’s assets have been pledged as collateral to SVB on a first priority, senior basis. In May 2013, in connection with the Wellington Agreement, the Company further amended the SVB Agreement to cancel the $3,000,000 term loan facility and reduce the revolving line of credit from $7,000,000 to $5,000,000. Therefore, the amount then outstanding under the term loan facility of $2,850,000 became due and was repaid. In connection with this SVB amendment, the Company paid SVB fees of $25,000. In January 2014, the SVB agreement was amended to increase the amount available under the revolving line of credit to $8,000,000 and extend the maturity date to August 2015. In October 2014, the Company entered into a Sixth Amendment to the Amended and Restated Loan and Security Agreement as well as a new Mezzanine Loan and Security Agreement (Mezzanine Loan) with SVB. The amendment extended the due date of the $8,000,000 revolving line of credit from August 2015 to August 2016 and allowed for an increase up to $13,000,000 if the Company met certain equity milestones as defined in the amendment. In November 2014, the first equity milestone had been met and therefore the revolving line of credit was increased to $11,000,000. The terms of the amended agreement were not substantially different and therefore the amendment was accounted for as a debt modification. As such, the existing unamortized debt issuance costs were added to the new issuance costs to be amortized over the new remaining term of the debt. The Mezzanine Loan provided for a new $10,000,000 term loan with a fixed interest rate of 9.5%. The payment terms of the term loan require the Company to make monthly interest only payments through the maturity date in October 2017, and a final payment ranging from 2.5% to 7.5% of the aggregate principal balance of the term loan depending on the payment date along with the outstanding principal balance. The Company borrowed $10,000,000 million under such term loan facility in October 2014. In connection with the October 2014 amendment to the SVB Agreement, the Company paid direct fees of $50,000. The Company also issued warrants to purchase 156,250 shares of Series D-1 convertible preferred stock with an exercise price of $7.60. The initial fair value of the Series D-1 warrants was $1,866,000 (see Note 9). Both the cash fees and the initial fair value of the warrants were being amortized as interest expense over the term of the debt. In October 2015, the Company entered into the Amended SVB Agreement. The Amended SVB Agreement amended the Company’s existing revolving line of credit (LOC) with SVB and provided the Company with a term loan (SVB Term Loan) to repay the Company’s existing Mezzanine Loan. The Amended SVB Agreement increased the LOC from $11,000,000 to $15,000,000, and extended the maturity date from August 2016 to October 2018. The LOC carries a variable interest rate equal to Prime plus 1.25% or LIBOR plus 2.5%. As of January 31, 2016, $6,500,000 had been borrowed under the LOC, leaving $8,500,000 available for borrowing. As of January 31, 2017, the interest rate on the LOC was 3.28%. The SVB Term Loan provides for a $10,000,000 term loan with a maturity date of September 2019. The SVB Term Loan carries a variable interest rate of Prime plus 1.25% or LIBOR plus 2.5% and requires quarterly principal payments and monthly interest payments through the maturity date in September 2019. The terms of the SVB Term Loan were substantially different than the Mezzanine Loan and therefore the amendment was accounted for as an extinguishment of the Mezzanine Loan. As such, the SVB Term Loan was recorded at fair value and the existing unamortized debt issuance costs were included in the calculation of any gain or loss on extinguishment. Therefore, the Company recorded a loss on extinguishment of debt of $1,524,000 in its consolidated statements of operations for the fiscal year ended January 31, 2016. As of January 31, 2017 and 2016, $6,875,000 and $9,375,000, respectively, were outstanding under the SVB Term Loan. As of January 31, 2017, the interest rate on the SVB Term Loan was 3.28%. The Wellington Agreement The company also had an Amended and Restated Loan and Security Agreement (Wellington Agreement with Wellington Financial LP (Wellington). In May 2013, the Company entered into a Loan and Security Agreement with Wellington Financial LP (Wellington). The Loan and Security Agreement (the Wellington Agreement) consists of a $10,000,000 term loan facility and a $2,000,000 operating line of credit. The term loan carried a fixed interest rate of 9.5% per annum. The term loan consisted of an advance of $10,000,000 at the effective date with monthly interest only payments to be made through the maturity date, at which time the entire outstanding principal amount became due and payable. Additional interest accrued on the unpaid principal amount of the term loan at a per annum rate of 2.5% which was also due at the maturity date. The operating line of credit carried a variable interest rate of the greater of prime plus 2.5% or 6.0% per annum. Interest was payable monthly on the outstanding principal amount of the operating line of credit. Under the operating line of credit, the Company could borrow, prepay, and reborrow from time to time before the maturity date. All of the Company’s assets were pledged as collateral to Wellington on a senior basis (subordinated to the security interest of SVB by up to $8,000,000 in aggregate principal amount). Both the term loan and the operating line of credit had a maturity of May 2016, but could be extended annually to May 2017 and 2018 at the option of the Company, upon the satisfaction of certain conditions. In connection with the Wellington Agreement, the Company paid direct fees of $154,000. The Company also issued warrants to purchase 126,315 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, shares of the Company’s preferred stock issued at its next round of equity financing. The initial fair value of the Series D-1 warrants was $1,446,000 (see Note 9). Both the cash fees and the initial fair value of the warrants were being amortized as interest expense over the term of the debt. During January 2014, the Wellington Agreement was amended to increase the term loan facility from $10,000,000 to $13,000,000, bringing the total loan commitment to $15,000,000. In connection with the January 2014 amendment, the Company paid direct fees of $45,000. The Company also issued warrants to purchase 31,579 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, shares of the Company’s stock of the same class and series as issued at its next round of equity financing, if such financing generates proceeds of at least $5,000,000. In addition, the Company authorized an additional 250,000 shares of Series D-1 convertible preferred stock. The initial fair value of the Series D-1 warrants was $403,000 (see Note 9). Both the cash fees and the initial fair value of the warrants were being amortized as interest expense over the term of the debt. In October 2014, the Wellington Agreement was amended to consolidate the operating loan and related accrued interest into one term loan. The face value of the term loan became $15,408,000 ($13,000,000 original term loan plus the $2,000,000 operating loan plus the $408,000 interest accrued on the term loan). The terms of the amended agreement were not substantially different and therefore the amendment was accounted for as a debt modification. As such, the existing unamortized debt issuance costs were added to the new issuance costs and to be amortized over the new remaining term of the debt. The payment terms of the term loan were amended whereby the Company was required to make monthly interest only payments through the maturity date, which was extended to October 2017, and a final payment ranging from 2.5% to 7.5% of the aggregate principal balance of the term loan depending on the payment date along with the outstanding principal balance. The interest rate remained the same at a fixed rate of 9.5% and the accrued interest no longer continues to exist. In connection with the October 2014 amendment to the Wellington Agreement, the Company paid direct fees of $97,500. The Company also issued warrants to purchase 147,936 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, shares of the Company’s stock of the same class and series as issued at its next round of equity financing, if such financing generates proceeds of at least $5,000,000. The initial fair value of the Series D-1 warrants was $1,767,000 (see Note 9). Both the cash fees and the initial fair value of the warrants were being amortized as interest expense over the term of the debt. In August 2015, all amounts outstanding under the Wellington Agreement were fully repaid in accordance with its terms. The remaining unamortized debt issuance costs of $2,564,000 were recorded as interest expense in the fiscal year ended January 31, 2016. The SVB Agreement includes various financial and non-financial covenants for which the Company was in compliance as of January 31, 2017. Amortization expense related to debt issuance costs and discounts for the fiscal years ended January 31, 2017, 2016 and 2015 was $22,000, $3,512,000 and $771,000, respectively, and is recorded as additional interest expense in the consolidated statements of operations. Total interest expense was $501,000, $6,021,000 and $3,087,000 for the fiscal years ended January 31, 2017, 2016 and 2015, respectively. The following table represents the Company’s short-term and long-term debt obligations: January 31, Rate Maturity 2017 2016 (in thousands) Silicon Valley Bank: Revolving line of credit P+1.25% or L+2.5% October 2018 (1) $ (6,500 ) $ (6,500 ) Term loan P+1.25% or L+2.5% September 2019 (6,875 ) (9,375 ) Total debt (13,375 ) (15,875 ) Debt, current portion 9,000 9,000 Current portion of unamortized debt discount (19 ) (19 ) Current portion of debt, net 8,981 8,981 Debt, less current portion 4,375 6,875 Long-term portion of unamortized debt discount (29 ) (49 ) Long-term debt, net 4,346 6,826 Total debt, net $ 13,327 $ 15,807 (1 ) The Company may borrow, prepay, and reborrow loans from time to time before the maturity date. Future principal payments of long-term debt as of January 31, 2017 were as follows: Principal (in thousands) Fiscal year ending January 31: 2018 $ — 2019 2,500 2020 1,875 Total $ 4,375

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Jan. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 8. Commitments and contingencies Minimum service commitments and leases The Company has certain contractual service contracts that contain non-cancellable minimum service commitments that expire on various dates through 2019. The Company leases office space and equipment under non-cancellable operating and capital leases that expire on various dates through the year ending January 31, 2022. Future committed payments as of January 31, 2017 were as follows (in thousands): Minimum service commitments Operating leases (in thousands) Fiscal year ending January 31: 2018 $ 1,270 $ 2,032 2019 318 2,251 2020 — 2,188 2021 — 2,057 Thereafter — — Total $ 1,588 $ 8,528 Leases for certain office facilities include scheduled periods of abatement and escalation of rental payments. The Company recognizes minimum rental expenses and lease incentives for operating leases on a straight-line basis over the term of the leases. Total rent expense incurred during the fiscal years ended January 31, 2017, 2016 and 2015 was $1,275,000, $2,212,000 and $1,355,000, respectively. On March 30, 2015, the Company moved its headquarters to 300 Park Avenue in San Jose, CA and ceased using the leased office space at its prior headquarters. The Company was obligated to continue to make rental payments on the lease for its prior headquarters through January 2016. Therefore, the Company recorded exit costs based on the remaining lease rentals, net of estimated sublease income in the amount of $693,000 which was recognized in the Company’s consolidated statements of operations in general and administrative expense for the fiscal year ended January 31, 2016. Also, in connection with exiting its prior headquarters, the Company wrote off abandoned leasehold improvements with a net book value of approximately $245,000 resulting in a charge included in general and administrative expenses for the year ended January 31, 2016. Indemnifications In the normal course of business, the Company provides indemnifications of varying scope to customers against claims of intellectual property infringement made by third parties arising from the use of our services and the Company may be subject to claims by customers under these indemnification provisions. Historically, costs related to these indemnification provisions have not been significant and the Company is unable to estimate the maximum potential impact of these indemnification provisions on future results of operations. To the extent permitted under Delaware law, the Company has agreements to indemnify directors and officers for certain events or occurrences while the director or officer is or was serving at the Company’s request in such capacity. The indemnification period covers all pertinent events and occurrences during the director’s or officer’s lifetime. 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 limits our exposure and enables the Company to recover a portion of any future amounts paid. The Company believes that the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal. Other taxes The Company conducts operations in many tax jurisdictions throughout the United States. In many of these jurisdictions, non-income based taxes, such as property taxes, sales and use taxes, and value-added taxes are assessed on our operations in that particular location. While the Company strives to ensure compliance with these various non-income based tax filing requirements, there have been instances where potential non-compliance exposures have been identified. In accordance with U.S. GAAP, the Company makes a provision for these exposures when it is both probable that a liability has been incurred and the amount of the exposure can be reasonably estimated. Settlement liability On November 25, 2013, the Company and Callidus Software Inc. (Callidus) entered into a settlement agreement, in which both parties agreed to a mutual covenant not to sue in respect of certain patents for a period of seven years and to mutual releases. On November 26, 2013, all claims were dismissed by the United States District Court, Northern District of California. Under the settlement agreement the Company agreed to pay Callidus $2,000,000 in installments with the first, second, and third payments of $500,000 paid in November 2013, 2014, and 2015 respectively. The Company made the final payment of $500,000 in November 2016.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Jan. 31, 2017
Equity [Abstract]
Stockholders' Equity	Note 9. Stockholders’ equity Preferred Stock Upon completion of the IPO, the Company’s issued and outstanding convertible preferred stock was automatically converted into 17,871,971 shares of common stock and the Company’s certificate of incorporation was amended and restated to authorize the Company to issue up to 20,000,000 shares of preferred stock with a par value of $0.001 per share. Common stock Upon completion of the IPO, the Company’s certificate of incorporation was amended and restated to increase the amount of common stock authorized for issuance from 120,000,000 to 1,000,000,000 shares of $0.001 par value of common stock. As of January 31, 2017 and 2016, the Company was authorized to issue up to 1,000,000,000 shares of common stock. Shares of common stock reserved for future issuance are as follows: January 31, 2017 Common stock outstanding 31,519,134 Stock options and restricted stock units outstanding 6,009,249 Shares reserved for future stock option issuances 1,252,807 Shares reserved for employee stock purchase plan 857,350 Common stock warrants outstanding 154,372 Total shares reserved 39,792,912 Series E preferred stock options In connection with our acquisition of Centive, Inc. (Centive) in January 2009, the Company reserved for issuance 399,960 shares of Series E convertible preferred stock related to Series E convertible preferred stock options with an exercise price of $0.9580 per share, granted to former members of Centive management as designated by the former Centive shareholders. The shares may be issued to the former members of Centive management upon exercise of the options only upon the completion of a sale event of the Company or if the shares become freely tradable in a public securities market. In either case, the proceeds from the exercise of the options, once received by the Company or, in the case of a cashless exercise, any shares tendered back to the Company to satisfy the exercise price, will be distributed to the former Centive shareholders. If the shares underlying the options are not issued to the former members of Centive management, either because they are never exercised or they terminate by their expiration date of January 22, 2019, then the shares will be distributed to the former Centive shareholders. Upon the IPO, the Company’s outstanding convertible preferred stock options became options to purchase common stock. In December 2015 and January 2016, the former members of Centive management each exercised their options on a cashless exercise basis. As a result, 188,744 shares of common stock were issued and 211,216 shares were tendered back to the Company to satisfy the exercise price and required tax withholdings. The remaining 41,553 shares were distributed to the former Centive shareholders during the year ended January 31, 2017. Warrants Prior to the IPO, the Company had determined that the warrants to purchase Series C, D and D-1 convertible preferred stock should be liability classified and the warrants to purchase Series F convertible preferred stock should be equity classified. Upon the IPO, the Company’s outstanding convertible preferred stock warrants became warrants to purchase common stock and the Company’s outstanding preferred stock warrant liabilities became indexed to the Company’s common stock and accordingly have been reclassified to additional paid-in capital. In connection with a bank debt facility agreement in 2008, the Company issued a warrant to purchase 35,433 shares of Series C convertible preferred stock with an exercise price of $5.08 per share and 15,789 shares of Series D convertible preferred stock with an exercise price of $7.60 per share. The warrant is exercisable at any time during its term, which is the longer of 10 years from the date of issuance or seven years after a registered initial public offering of the Company’s common stock. The initial fair values of the warrants were amortized to interest expense over the term of the debt. In August 2012, in connection with the SVB Agreement, the Company issued a warrant to purchase 9,868 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, warrants to purchase shares of the Company’s preferred shares issued at its next round of equity financing. If the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by multiplying the aggregate original principal amount by 2.5% and then dividing by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to 10 years from the date of issuance. The initial fair value of the warrants is being amortized to interest expense over the term of the debt. In May 2013, in connection with the May 2013 Wellington Agreement, the Company issued warrants to purchase 126,315 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, warrants to purchase shares of the Company’s preferred stock of the same class and series as issued at its next round of equity financing, if such financing generates proceeds of at least $5,000,000. If, instead of Series D-1, the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by dividing $960,000 by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance or five years after a registered initial public offering of the Company’s common stock. The initial fair value of the warrants is being amortized to interest expense over the term of the facility. In January 2014, in connection with the January 2014 Wellington Agreement amendment, the Company issued warrants to purchase 31,579 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, warrants to purchase the Company’s stock of the same class and series as issued at its next round of equity financing, if such financing generates proceeds of at least $5,000,000. If, instead of Series D-1, the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by dividing $240,000 by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance or five years after a registered initial public offering of the Company’s common stock. The initial fair value of the warrants is being amortized to interest expense over the term of the facility. The fair value of the preferred stock warrants is measured using the Black-Scholes option pricing model. Inputs to that model include: the warrants remaining contractual term, the risk-free interest rate over the term, expected volatility based on representative peer companies and the estimated fair value of the underlying class of preferred stock. The change in the fair value of the preferred stock warrants was as follows (in thousands): Balance at January 31, 2015 $ 5,885 Decrease in fair value of warrants (3,542 ) Reclassified to additional paid-in capital (2,343 ) Balance at January 31, 2016 $ — In November 2014, in connection with the October 2014 Wellington Agreement amendment, the Company issued warrants to purchase 147,936 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share or, at the option of the holder, warrants to purchase the Company’s stock of the same class and series as issued at its next round of equity financing, if such financing generates proceeds of at least $5,000,000. If, instead of Series D-1, the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by dividing $1,124,315 by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance or five years after a registered initial public offering of the Company’s common stock. The initial fair value of the warrants is being amortized to interest expense over the term of the facility. Also in November 2014, in connection with the SVB Agreement amendment, the Company issued warrants to purchase 156,250 shares of Series D-1 convertible preferred stock with an exercise price of $7.60 per share. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance. The initial fair value of the warrants is being amortized to interest expense over the term of the facility. Fair value of the warrants at the date of issuance was determined using the Black-Scholes option pricing model with the following assumptions: Series B Series C Series D Series D-1 Series D-1 Series D-1 Series D-1 Date of issuance November March 2008 April 2008 August 2012 May 2013 January 2014 November 2014 Fair value at date of issuance (in thousands) $ 18 $ 143 $ 82 $ 106 $ 1,446 $ 403 $ 3,633 Expected term in years 7.56 10.00 10.00 10.00 10.00 10.00 10.00 Expected volatility 70 % 55 % 55 % 55 % 55 % 52 % 52 % Risk-free interest rate 4.61 % 3.45 % 3.45 % 1.51 % 2.16 % 2.88 % 2.34 % Prior to the IPO, the Company had determined that the warrants should be liability classified with changes in the fair value at each reporting period included under the consolidated statements of operations under the caption “(Increase) decrease in fair value of warrant liabilities” until the earlier of: (1) exercise or (2) the expiration of the warrants. Upon the IPO, the Company’s outstanding convertible preferred stock warrants automatically converted into warrants to purchase common stock, and the Company’s outstanding preferred stock warrant liabilities became indexed to the Company’s common stock and accordingly have been reclassified to additional paid‑in capital. In November 2014, in connection with the issuance of Series F convertible preferred stock, the Company issued warrants to purchase 216,175 shares of Series F convertible preferred stock with an exercise price of $9.8296 per share. The warrant is exercisable at any time during its term, prior to the earlier of (i) 5 years from the date of issuance, (ii) an acquisition of the Company by another entity, or (iii) immediately prior to the closing of a firm commitment underwritten initial public offering pursuant to an effective registration statement filed under the Securities Act covering the offering and the sale of the Company’s common stock. The initial fair value of the warrants was recorded as a discount to the Series F convertible preferred stock. Fair value of the warrants at the date of issuance was determined using the Black-Scholes option pricing model with the following assumptions (in thousands): Series F Date of issuance November Fair value at date of issuance $ 878 Expected term in years 5 Expected volatility 52 % Risk-free interest rate 1.64 % The Company has determined that the warrants should be equity classified. The outstanding preferred stock warrants were automatically converted into warrants to purchase common stock upon effectiveness of the IPO.

Stock-Based Awards and Stock-Ba

Stock-Based Awards and Stock-Based Compensation	12 Months Ended
	Jan. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Awards and Stock-Based Compensation	Note 10. Stock-based awards and stock-based compensation 2005 Stock option plan In 2005, the Company adopted a stock plan (the 2005 Plan) pursuant to which the Company’s board of directors may grant options to purchase common stock or unvested common shares to employees, consultants and advisors of the Company. In September 2011, the Company amended the Stock Plan to permit the Company to grant Restricted Stock Units (RSUs). In June 2015, the 2005 Plan was terminated in connection with the IPO, and accordingly, no shares are available for future issuance under this plan. All shares that were available for the Company to grant under the 2005 Plan immediately prior to its termination were canceled. Awards under the 2005 Plan that expire or terminate without having been exercised subsequent to the IPO or are forfeited to or repurchased by the Company subsequent to the IPO will become available for issuance under the 2015 Equity Incentive Plan, subject to the limits set forth in that plan. 2015 Equity Incentive Plan In June 2015, the Board adopted and the Company’s stockholders approved the 2015 Equity Incentive Plan (2015 Plan), which became effective upon the effectiveness of the IPO Prospectus. The 2015 Plan provides for the grant of incentive stock options, within the meaning of Section 422 of the Internal Revenue Code, to the Company’s employees and any subsidiary corporations’ employees, and for the grant of nonstatutory stock options, restricted stock, restricted stock units, stock appreciation rights, performance units and performance shares to the Company’s employees, directors and consultants and the Company’s subsidiary corporations’ employees and consultants. Beginning February 1, 2016, shares reserved for issuance under the 2015 Equity Incentive Plan increase annually in increments equal to the lesser of (i) 3,000,000 shares, (ii) five percent of the outstanding shares on the last day of the immediately preceding fiscal year, or (iii) such number of shares determined by the Board of Directors. As of January 31, 2017, an aggregate of 1,252,799 common shares were reserved and available for issuance under the 2015 Plan. 2015 Employee Stock Purchase Plan In June 2015, the Company’s Board of Directors adopted and the Company’s stockholders approved the 2015 Employee Stock Purchase Plan (ESPP) with the first offering period under the ESPP beginning on the effectiveness of the IPO Prospectus. As of such date, an aggregate of 600,000 shares of common stock were reserved and are available for issuance under the ESPP. Beginning February 1, 2016, shares reserved for issuance under the ESPP increase annually in increments equal to the lesser of (i) 1,180,000 shares, (ii) two percent of the outstanding shares on the last day of the immediately preceding fiscal year, or (iii) such number of shares determined by the Board of Directors. 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, at 85% of the fair market value as defined in the ESPP, on the first day of the offering period or the last day of the purchase period, whichever is lower, and subject to any plan limitations. The ESPP provides for consecutive six-month purchase periods, starting on the first trading day on or after March 20 and September 20 of each year. The first purchase period began on the first trading day after the effective date of the registration statement and ended on March 20, 2016. Stock-based compensation included in the Company’s consolidated statements of operations is as follows: Fiscal year ended January 31, 2017 2016 2015 (in thousands) Cost of subscription services $ 595 $ 456 $ 237 Cost of professional services 1,009 454 61 Research and development 2,013 898 272 Sales and marketing 2,176 893 312 General and administrative 2,618 1,156 776 Total $ 8,411 $ 3,857 $ 1,658 Stock option activity Stock option activity is as follows: Number of shares Weighted average exercise price Weighted average remaining contractual term Aggregate intrinsic value (in thousands) Balance at January 31, 2016 4,844,592 $ 4.49 6.6 years $ 14,268 Granted 785,100 11.07 Exercised (1,184,903 ) 2.14 Forfeited (112,140 ) 8.02 Expired (9,495 ) 7.19 Balance at January 31, 2017 4,323,154 $ 6.23 7.0 years $ 25,582 Vested and expected to vest as of January 31, 2017 4,194,375 $ 6.12 7.0 years $ 25,288 Exercisable as of January 31, 2017 2,461,232 $ 3.96 5.7 years $ 20,160 Stock options granted during the fiscal years ended January 31, 2017, 2016 and 2015 had a weighted-average grant-date fair value of $5.16, $4.29 and $1.08, respectively. The aggregate intrinsic value of stock options exercised during the fiscal years ended January 31, 2017, 2016 and 2015 was $10,838,000, $4,510,000 and $1,344,000, respectively. The aggregate intrinsic value represents the difference between the fair market value based on the valuation of the common stock as determined by the Company’s Board of Directors prior to the IPO, or the closing market price of the Company’s common stock following the IPO, and the exercise price of the in-the-money stock options. The Company currently uses authorized and unissued shares to satisfy share award exercises. As of January 31, 2017, there was approximately $7,808,000 of total unrecognized compensation cost related to unvested stock options granted under the Stock Plan which will be recognized over a weighted average period of 2.93 years. Restricted stock units Restricted stock unit activity is as follows: Number of shares Weighted average grant-date fair value Balance at January 31, 2016 860,472 $ 8.48 Granted 1,285,008 12.12 Released (361,902 ) 8.18 Forfeited (97,483 ) 8.68 Balance at January 31, 2017 1,686,095 $ 11.31 RSUs are converted into shares of the Company’s common stock upon vesting on a one-for-one basis. RSUs typically are scheduled to vest over four years. Vesting of RSUs is subject to the grantee’s continued service with the Company. The compensation expense related to these awards is determined using the fair market value of the Company’s common stock on the date of the grant, and the compensation expense is recognized over the vesting period. As of January 31, 2017, there was a total of $17,282,000 in unrecognized compensation cost related to RSUs, which is expected to be recognized over a weighted-average period of approximately 3.3 years. Stock-based compensation to employees All share-based payments to employees are measured based on the grant date fair value of the awards and recognized in the consolidated statements of operations over the period during which the employee is required to perform services in exchange for the award (generally the vesting period of the award). We estimate the fair value of stock option awards and purchase rights granted under the ESPP using the Black-Scholes option-pricing model. We determine the assumptions for the option-pricing model as follows: Fair value of common stock Prior to our IPO, our board of directors considered numerous objective and subjective factors to determine the fair value of our common stock at each meeting at which awards were approved. The factors included, but were not limited to: (i) contemporaneous third-party valuations of our common stock; (ii) the prices, rights, preferences and privileges of our preferred stock relative to those of our common stock; (iii) the lack of marketability of our common stock; (iv) our actual operating and financial results; (v) current business conditions and projections; and (vi) the likelihood of achieving a liquidity event, such as an IPO or sale of our company, given prevailing market conditions. Since our IPO, we have used the market closing price for our common stock as reported on the New York Stock Exchange to determine the fair value of our common stock at each meeting at which awards were approved. Expected dividend yield The Company historically has not paid dividends on common stock and has no plans to issue dividends in the foreseeable future. Expected volatility Expected volatility is estimated based on the average historical volatility of comparable entities with publicly traded shares. Expected term The expected term represents the period that share-based awards are expected to be outstanding. Since the Company did not have sufficient historical information to develop reasonable expectations about future exercise behavior, the Company uses the simplified method to compute expected term, which consists of taking the midpoint between an option’s vesting date and contractual term. Risk-free interest rate The risk-free rate for the expected term of the option is based on the U.S. Treasury yield curve at the date of grant. The following assumptions were used to estimate the fair value of options granted: Fiscal year ended January 31, Stock Options 2017 2016 2015 Expected dividend yield — — — Expected volatility 45% — 47% 47% — 50% 52% — 53% Expected term (years) 6.25 6.25 6.25 Risk-free interest rate 1.26% — 2.23% 1.45% — 1.85% 1.39% — 1.95% Employee Stock Purchase Plan The following assumptions were used to estimate the fair value of purchase rights granted under the ESPP: Fiscal year ended January 31, ESPP 2017 2016 Expected dividend yield — — Expected volatility 38% — 42% 43% Expected term (years) 0.50 — 2.00 1.50 Risk-free interest rate 0.46% 0.08% As of January 31, 2017, the Company had $533,000 in total unrecognized compensation expense, net of estimated forfeitures, related to purchase rights that will be recognized over the weighted average period of 0.88 years.

Income Taxes

Income Taxes	12 Months Ended
	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 11. Income taxes The components of income (loss) before taxes are as follows: Fiscal year ended January 31, 2017 2016 2015 (in thousands) United States $ (17,348 ) $ (25,006 ) $ (18,665 ) International 675 586 398 $ (16,673 ) $ (24,420 ) $ (18,267 ) Income tax expense consisted of the following: Fiscal year ended January 31, 2017 2016 2015 (in thousands) Current: United States $ — $ — $ — International 224 281 261 State 17 18 4 241 299 265 Deferred: United States — — — International — — — — — — Total income tax expense $ 241 $ 299 $ 265 The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented: Fiscal year ended January 31, 2017 2016 2015 Tax benefit at federal statutory rate 34 % 34 % 34 % State income taxes, net of federal effect 6 % 5 % 4 % Change in valuation allowance (36 )% (34 )% (35 )% Other (5 )% (6 )% (4 )% Total provision (1 )% (1 )% (1 )% Deferred income taxes reflect the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The components of net deferred tax assets as of January 31, 2017 and 2016, are as follows (in thousands): January 31, 2017 2016 (in thousands) Deferred tax assets: Federal and state net operating losses $ 86,214 $ 79,826 Research and development credits 3,176 2,247 Accruals and reserves 418 2,403 Amortization — 15 Deferred revenue 1,346 998 Property and equipment 565 1,183 Other 1,578 666 Total deferred tax assets 93,297 87,338 Valuation allowance (93,297 ) (87,338 ) Net deferred tax assets $ — $ — In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent on the generation of future taxable income during the periods in which those temporary differences become deductible. Based on the levels of historical taxable income and projections for future taxable income over the period in which temporary differences are deductible, the Company has recorded a valuation allowance for substantially all of its deferred tax assets, except to the extent of deferred tax liabilities, as it is unable to conclude that it is more likely than not that the deferred tax assets in excess of deferred tax liabilities will be realizable. The net change in the valuation allowance for the fiscal years ended January 31, 2017 and 2016 was an increase of $5,959,000 and $8,360,000, respectively. The Company has not provided for U.S. federal income and foreign withholding taxes on undistributed earnings from non-U.S. operations as of January 31, 2017 because the Company intends to reinvest such earnings indefinitely outside of the United States. If the Company were to distribute these earnings, foreign tax credits may become available under current law to reduce the resulting U.S. income tax liability. The amount of any unrecognized deferred tax liability related to these earnings would not be material. As of January 31, 2017, the Company had approximately $239,952,000 and $84,242,000 of federal and state net operating loss carryforwards, respectively, and federal and state research and development tax credit carryforwards in the amount of $3,821,000 and $2,532,000, respectively. Utilization of the Company’s net operating loss and tax credit carryforwards may be subject to an annual limitation due to the ownership change limitations provided by the Internal Revenue Code and similar state provisions. Such annual limitation could result in the expiration of a portion of the net operating loss carryforward before utilization. If not utilized, the carryforwards will begin to expire in 2019 for federal purposes and 2017 for state purposes. The Company’s consolidated balance sheets reflect deferred tax assets related to net operating losses and tax credit carryforwards excluding amounts resulting from excess stock-based compensation. Amounts related to excess stock-based compensation are accounted for as an increase to additional paid-in capital if and when realized through a reduction in income taxes payable. For the fiscal years ended January 31, 2017 and 2016, the Company did not accrue interest and penalties related to unrecognized tax benefits as the amounts are not material. The following are changes in unrecognized tax benefits: (in thousands) Balance at January 31, 2015 $ 1,959 Additions based on tax positions related to the current year 409 Additions based on tax positions related to the prior year 93 Lapse of statute of limitations (6 ) Balance at January 31, 2016 2,455 Additions based on tax positions related to the current year 799 Additions based on tax positions related to the prior year 197 Decreases based on tax positions related to the prior year (39 ) Lapse of statute of limitations (21 ) Balance at January 31, 2017 $ 3,391 Other long-term liabilities balance as of January 31, 2017 and 2016 includes $205,000 and $169,000, respectively, of liabilities for uncertain tax positions, which would affect our income tax expense if recognized. The Company does not anticipate that the amount of existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. All tax years are open and may be subject to potential examination in one or more jurisdictions. The Company is not currently under federal, state or foreign income tax examination.

401(k) plan

401(k) plan	12 Months Ended
	Jan. 31, 2017
Compensation And Retirement Disclosure [Abstract]
401(k) Plan	Note 12. 401(k) plan The Company has a defined-contribution retirement plan under Internal Revenue Code Section 401(k) (the Plan). The Plan covers substantially all U.S. employees. Eligible employees are allowed to contribute up to the allowable Internal Revenue Service limit. The Company may make discretionary contributions to the Plan, which vest over two years with 50% vesting on the one year anniversary and 50% on the second year anniversary. During the fiscal years ended January 31, 2017, 2016 and 2015, the Company contributed $353,000, $267,000 and $191,000, respectively, to the Plan.

Basic and Diluted Net Loss Per

Basic and Diluted Net Loss Per Share	12 Months Ended
	Jan. 31, 2017
Earnings Per Share [Abstract]
Basic and Diluted Net Loss Per Share	Note 13. Basic and diluted net loss per share The following table sets forth the computation of the Company’s basic and diluted net loss per share of common stock under the two-class method attributable to common stockholders (in thousands, except per share data): Fiscal year ended January 31, 2017 2016 2015 (in thousands, except per share data) Numerator: Net loss $ (16,914 ) $ (24,719 ) $ (18,532 ) Denominator: Weighted-average common shares outstanding 30,593 18,545 2,769 Basic and diluted net loss per share $ (0.55 ) $ (1.33 ) $ (6.69 ) The following is a table summarizing the potentially dilutive common shares that were excluded from diluted weighted-average common shares outstanding (in thousands): Fiscal year ended January 31, 2017 2016 2015 Shares of common stock issuable upon conversion of preferred stock — — 17,872 Shares of common stock issuable upon exercise of warrants 154 472 739 Shares of common stock issuable under stock option plans outstanding 6,009 5,705 4,704 Potential common shares excluded from diluted net loss per share 6,163 6,177 23,315

Geographic Concentrations

Geographic Concentrations	12 Months Ended
	Jan. 31, 2017
Segments Geographical Areas [Abstract]
Geographic Concentrations	Note 14. Geographic concentrations Revenue by location is determined by the billing address of the customer. Approximately 91%, 90% and 92% of the Company’s revenue was from the United States for the fiscal years ended January 31, 2017, 2016 and 2015, respectively. Revenue from no other individual country exceeded 10% of total revenue for the fiscal years ended January 31, 2017, 2016 or 2015. Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of January 31, 2017 and 2016, more than 95% of the Company’s property and equipment was located in the United States.

Description of the Business a23

Description of the Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Initial Public Offering	Initial Public Offering On July 1, 2015, the Company completed its initial public offering (IPO) in which it sold 7,909,125 shares of common stock, which included 1,055,625 shares to cover over-allotments, to the public at $8.00 per share. The total gross proceeds from the offering were approximately $63,273,000. After deducting underwriting discounts and commissions, the aggregate net proceeds received totaled approximately $58,844,000, before offering costs of approximately $4,298,000. Upon the closing of the IPO, all shares of the Company’s then-outstanding convertible preferred stock automatically converted into an aggregate of 17,871,971 shares of common stock. In addition, upon the IPO, the Company’s outstanding convertible preferred stock warrants became warrants to purchase common stock and the Company’s outstanding preferred stock warrant liabilities became indexed to the Company's common stock and accordingly have been reclassified to additional paid-in capital. On June 11, 2015, a four-to-one reverse stock split of the Company's then-outstanding common stock and convertible preferred stock was effected in connection with the IPO. All information throughout these consolidated financial statements and notes to the consolidated financial statements relating to common stock, warrants to purchase common stock, stock awards, preferred stock, warrants to purchase convertible preferred stock and earnings per share has been retroactively adjusted to give effect to the four-to-one reverse stock split, without any change in the par value per share. Fractional shares resulting from the reverse stock split have been rounded down to the closest whole share.
Basis of Presentation	Basis of presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC). The accompanying consolidated financial statements include the accounts of Xactly Corporation and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The Company operates in a dynamic high-technology industry and believes that changes in any of the following areas could have a material adverse effect on the Company’s future financial position, results of operations, or cash flows; trends in new technologies and industry standards; market acceptance of the Company’s services; certain strategic relationships; litigation or claims against the Company based on intellectual property, patent, services, regulatory or other factors; and the Company’s ability to attract and retain employees necessary to support its growth.
Use of Estimates	Use of estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Significant items subject to such estimates and assumptions include, but are not limited to, revenue and sales allowances, allowance for doubtful accounts, determination of the fair value of short-term marketable securities, determination of the fair value of common and preferred stock (prior to IPO), preferred stock warrant liabilities (prior to IPO), stock-based compensation, contingent liabilities and accounting for income taxes. These estimates and assumptions are based on management’s best judgment. Management evaluates its estimates and assumptions using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates.
Revenue Recognition	Revenue recognition The Company’s revenue is derived from subscription services and professional services arrangements. Subscription services include revenue from the Company’s incentive compensation solutions. Subscriptions are typically sold through non-cancellable contracts with one to three year terms. Subscription fees are primarily based on the number of subscribers per customer per month. Customers are not permitted to take possession of the Company’s software. Professional services include revenue from assisting customers in implementing the Company’s solution and optimizing its use. These services include application configuration, system integration, data transformation and automation services, education and training services and strategic services. Professional services are billed predominantly on a time-and-materials basis with some fixed-fee arrangements. Professional services are performed by the Company directly or by third-party professional service providers engaged by the Company. Customers may also choose to perform these services themselves or engage their own third-party service providers. The Company recognizes revenue when all of the following conditions are met: • persuasive evidence of an arrangement exists; • the service is being provided to the customer or delivery has occurred; • the fee is fixed or determinable; and • collection of the fees are reasonably assured The Company’s subscription services are recognized ratably over the term of the arrangement as delivered. Professional services are recognized as the services are performed using the proportional-performance method. Performance is based on hours of work performed, or upon project completion for certain fixed-fee contracts. The Company also enters into multiple-element arrangements that include both subscription and professional services. When subscription services arrangements involve multiple elements that qualify as separate units of accounting, the Company allocates arrangement consideration to all deliverables based on the relative stand-alone selling price method in accordance with the selling price hierarchy, which includes: (i) vendor-specific objective evidence (VSOE) if available; (ii) third-party evidence (TPE) if VSOE is not available; and (iii) best estimate of selling price (BESP) if neither VSOE nor TPE is available. Revenue allocated to each deliverable, limited to the amount not contingent on future performance, is then recognized when the basic revenue recognition criteria are met for the respective deliverable. The Company determines whether VSOE can be established based on its historical pricing and discounting practices for the specific service when sold separately. In determining VSOE, the Company requires that a substantial majority of the selling prices for these services fall within a reasonably narrow pricing range. The Company limits its assessment of VSOE for each element to either the price charged when the same element is sold separately or the price established by management, having the relevant authority to do so, for an element not yet sold separately. The Company has not yet been able to establish VSOE for its subscription or professional services because it has not historically priced its offerings within a sufficiently narrow range. When VSOE cannot be established, the Company applies judgment with respect to whether it can establish a selling price based on TPE. TPE is determined based on third-party prices for similar deliverables when sold separately. Generally, the Company’s pricing strategy differs from that of its peers and its offerings contain a significant level of differentiation such that the comparable pricing of services with similar functionality cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor services’ selling prices are on a stand-alone basis. As a result, the Company has not been able to establish selling prices based on TPE. When the Company is unable to establish a selling price using VSOE or TPE, the Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. The Company estimates BESP for services by considering multiple factors including, but not limited to, prices it charges for similar offerings, market conditions, competitive landscape, and pricing practices. The Company currently uses BESP in order to allocate the selling price to its deliverables.
Deferred Revenue	Deferred revenue Deferred revenue primarily consists of billings or payments received in advance of revenue recognition from the Company’s subscription service and is recognized as the revenue recognition criteria are met. The Company generally invoices its customers annually in advance. Accordingly, the deferred revenue balance does not include the unbilled portion of subscription agreements. Deferred revenue also includes certain deferred professional service fees, which are recognized as revenue over the period services are provided. Also included in deferred revenue is a sales allowance for estimated future customer sales credits of $110,000 as of January 31, 2017 and 2016 that was recorded as a reduction in revenue. This amount is estimated based on historical sales credit activity.
Cash and Cash Equivalents and Short-Term Investments	Cash and cash equivalents and short-term investments The Company considers all highly liquid investments with original maturities of three months or less at the time of purchase to be cash equivalents. Cash equivalents as of January 31, 2017 and 2016 consisted of money market funds. The Company determines the appropriate classification of investment securities at the time of purchase and re-evaluates such designation as of each balance sheet date. As of January 31, 2017, all investment securities were designated as "available-for-sale" and recorded at fair value. The Company classifies its marketable securities as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. The Company may sell these securities at any time for use in current operations or for other purposes, such as consideration for acquisitions, even if they have not yet reached maturity. As a result, the Company classifies its investments, including securities with maturities beyond twelve months as “current assets” in the accompanying consolidated balance sheets. Marketable securities on the consolidated balance sheets consist of securities with original maturities at the time of purchase greater than three months and the remaining securities are reflected in cash and cash equivalents. When the Company has determined that an other-than-temporary decline in fair value has occurred, the amount of the decline is recognized in earnings. Gains and losses are determined using the specific identification method.
Restricted Cash	Restricted cash The Company had restricted cash amounts with restrictions of less than one year. As of January 31, 2017 and 2016, the Company had money market accounts with a balance of $0 and $184,000, respectively, in lieu of a deposit for a facility lease. As of January 31, 2017 and 2016, the Company had a principal balance under certificates of deposit of $102,000 in lieu of a deposit for its corporate credit cards and merchant services. Cash amounts with restrictions of longer than one year are classified as long-term and included in other long-term assets. As of January 31, 2017 and 2016, this consisted of money market accounts with a balance of $129,000 held in lieu of deposits for facilities leases.
Concentrations of Credit Risk	Concentrations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. Cash equivalents consist of money market funds, which are invested through financial institutions in the United States. Such deposits may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. Most of the Company’s customers are located in the United States. No single customer accounted for more than 10% of accounts receivable as of January 31, 2017 or 2016. No single customer accounted for more than 10% of revenue for the fiscal year ended January 31, 2017, 2016 or 2015.
Accounts Receivable	Accounts receivable Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts for estimated losses inherent in its accounts receivable portfolio. In establishing the required allowance, management considers historical losses adjusted to take into account current market conditions and customers’ financial condition, the amount of receivables in dispute, and the current receivables aging and current payment patterns. The Company reviews its allowance for doubtful accounts monthly. Past-due balances over 90 days and over a specified amount are reviewed individually for collectability. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The Company does not have any off-balance-sheet credit exposure related to its customers. Below is a summary of the changes in allowance for doubtful accounts for the fiscal years ended January 31, 2017, 2016 and 2015: Balance at Beginning of period Provision, net of recoveries Write-offs Balance at end of period (in thousands) Fiscal year ended January 31, 2015 $ 40 $ 88 $ (88 ) $ 40 Fiscal year ended January 31, 2016 40 10 (10 ) 40 Fiscal year ended January 31, 2017 40 499 (299 ) 240
Fair Value of Financial Instruments	Fair value of financial instruments The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and debt approximate fair value.
Property and Equipment	Property and equipment Property and equipment are recorded at cost less accumulated depreciation and amortization. Equipment and software under capital leases are stated at the present value of minimum lease payments. Depreciation on property and equipment is calculated using the straight-line method over the estimated useful lives of the related assets, generally two to five years. Leasehold improvements are amortized over the shorter of the estimated useful lives of the leased assets or the lease term. The following table summarizes the useful lives of the Company’s major assets: Asset category Useful life Computer software and equipment 3 years Furniture and fixtures 2 to 5 years Leasehold improvements 2 to 6 years
Intangible Assets	Intangible assets Intangible assets consist of acquired customer relationships, intellectual property and contract rights acquired in business combinations and are recorded at fair value, less accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives ranging from two to six years. Amortization of intellectual property and contract rights are included in cost of revenue. Amortization of acquired customer relationships is included in operating expenses.
Impairment of Long-Lived Assets, Including Goodwill	Impairment of long-lived assets, including goodwill Long-lived assets such as property and equipment and intangible assets subject to depreciation and amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability is measured by comparison of the carrying amount of the asset or asset group to the future net undiscounted cash flows expected to be generated by the asset or asset group. If such assets are considered impaired, an impairment loss would be recognized as the amount by which the carrying amount of the asset exceeds the fair value of the asset or asset group. Costs in excess of fair value of tangible and other identifiable intangible assets acquired and liabilities assumed in a business combination are recorded as goodwill, which is tested for impairment using a two-step approach. The Company evaluates goodwill, at a minimum, on an annual basis in the fourth quarter, and whenever events or changes in circumstances suggest that the carrying amount may not be recoverable. Impairment of goodwill is tested at the reporting unit level by comparing the reporting unit’s carrying amount, including goodwill, to its fair value. For purposes of this analysis, the Company considers itself a single reporting unit. If the carrying amount of the reporting unit exceeds its fair value, goodwill is considered impaired and a second step is performed to measure the amount of the impairment loss, if any. To the extent the carrying value of the reporting unit is zero or negative, the Company would perform the second step of the impairment test to measure the amount of any impairment loss if it is more likely than not that a goodwill impairment exists. As of January 31, 2017 and 2016, the carrying value of the Company’s single reporting unit was positive. There were no impairment losses on long-lived assets, including goodwill, for the fiscal years ended January 31, 2017, 2016 or 2015.
Stock-Based Compensation	Stock-based compensation The Company accounts for stock-based payment transactions in which the Company receives employee services in exchange for equity instruments, based on the estimated fair values of the Company’s equity instruments on the date of grant. For stock options and purchase rights granted under the ESPP, the Company uses the Black-Scholes option pricing model to estimate the fair value of the awards. The fair value of each restricted stock unit (“RSU”) is equal to the market value of our common stock on the date of grant. Stock-based compensation expense is recognized on a straight-line basis over the requisite service period. The Company believes that the fair value of stock options granted to non-employees is more reliably measured than the fair value of the services received. As such, the fair value of the unvested portion of the options granted to non-employees is re-measured each period. The resulting increase in value, if any, is recognized as expense during the period the related services are rendered. See Note 10 for further information on stock-based compensation.
Income Taxes	Income taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the consolidated 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 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. The measurement of deferred tax assets is reduced, if necessary, by a valuation allowance for any tax benefits for which future realization is not more likely than not to be realized. As of January 31, 2017 and 2016, the Company has a full valuation allowance against its net deferred tax assets. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest related to unrecognized tax benefits as part of income tax expense. See Note 11 for further information on income taxes.
Taxes Collected from Customers	Taxes collected from customers We net taxes collected from customers against those remitted to government authorities in our consolidated financial statements. Accordingly, taxes collected from customers are not reported as revenue.
Foreign Currency	Foreign currency The functional currency of each foreign subsidiary is its respective local currency. Accordingly, all assets and liabilities related to these operations are translated into U.S. dollars at the current exchange rates at the end of each period and recorded as part of a separate component of stockholders’ equity and reported in the statement of comprehensive loss. Revenue and expenses are translated at average exchange rates in effect during the period. Foreign currency transaction gains and losses are included in the results of operations and have not been material to date. As of January 31, 2017 and 2016, no foreign currency transactions were hedged.
Comprehensive Loss	Comprehensive loss The Company reports by major components, and as a single total, the change in its net assets during the period from nonowner sources. Comprehensive loss consists of net loss and other comprehensive loss, which includes certain changes in equity that are excluded from net loss. The only difference between the Company’s net loss and items of comprehensive loss are effects of foreign exchange rate translation adjustments.
Advertising Expenses	Advertising expenses Advertising is expensed as incurred as a component of sales and marketing expenses in the consolidated statements of operations. Advertising expense was approximately $1,337,000, $1,362,000 and $1,131,000 for the fiscal years ended January 31, 2017, 2016 and 2015, respectively.
Software Development Costs	Software development costs The Company’s software and website development costs are accounted for under the guidance for internal use software and website development costs. The costs incurred in the preliminary stages of development are expensed as incurred. Once an application has reached the development stage, if: (1) the costs are direct and incremental and (2) management has determined that it is probable that the project will be completed and the software will be used to perform the function intended, internal and external costs are capitalized until the application is substantially complete and ready for its intended use. Because the majority of the Company’s development efforts are categorized in the operation stage (post-implementation) or do not result in additional functionality, no costs have been capitalized to date. These costs are included in the accompanying consolidated statements of operations as research and development expenses.
Net Loss Per Share	Net loss per share Basic earnings per share is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method. The Company applies the two-class method to calculate basic and diluted net loss per share of common stock as shares of convertible preferred stock are participating securities due to their dividend rights. The two-class method is an earnings allocation method under which earnings per share is calculated for common stock considering a participating security’s rights to undistributed earnings as if all such earnings had been distributed during the period. The Company’s participating securities are not included in the computation of net loss per share in periods of net loss because the preferred stockholders have no contractual obligation to participate in losses.
Segment Information	Segment information The Company has determined that the chief executive officer is the chief operating decision maker. The Company’s chief executive officer reviews financial information presented on a consolidated basis for purposes of assessing performance and making decisions on how to allocate resources. Accordingly, the Company has determined that it operates in a single reporting segment.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In September 2015, the FASB issued ASU 2015-16 Simplifying the Accounting for Measurement-Period Adjustments In April 2015, the FASB issued ASU 2015-05 Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements—Going Concern

Description of the Business a24

Description of the Business and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Summary of the Changes in Allowance for Doubtful Accounts	Below is a summary of the changes in allowance for doubtful accounts for the fiscal years ended January 31, 2017, 2016 and 2015: Balance at Beginning of period Provision, net of recoveries Write-offs Balance at end of period (in thousands) Fiscal year ended January 31, 2015 $ 40 $ 88 $ (88 ) $ 40 Fiscal year ended January 31, 2016 40 10 (10 ) 40 Fiscal year ended January 31, 2017 40 499 (299 ) 240
Schedule of Estimated Useful Lives of Property and Equipment	The following table summarizes the useful lives of the Company’s major assets: Asset category Useful life Computer software and equipment 3 years Furniture and fixtures 2 to 5 years Leasehold improvements 2 to 6 years

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Jan. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Schedule of Accounts Receivable, Net	Accounts receivable, net consisted of the following: January 31, 2017 2016 (in thousands) Accounts receivable $ 25,458 $ 19,378 Unbilled accounts receivable 1,229 940 Allowance for doubtful accounts (240 ) (40 ) Accounts receivable, net $ 26,447 $ 20,278
Schedule of Accrued Expenses	Accrued expenses consisted of: January 31, 2017 2016 (in thousands) Accrued compensation and benefits $ 4,528 $ 5,148 Accrued expenses 1,626 1,909 Deferred rent 965 948 Accrued legal settlement — 500 Sales tax payable 432 460 Other 804 547 Total accrued expenses $ 8,355 $ 9,512
Summary of Other Long-Term Liabilities	Other long-term liabilities consisted of: January 31, 2017 2016 (in thousands) Deferred rent $ 3,124 $ 4,088 Deferred tax liabilities 205 169 Total other long-term liabilities $ 3,329 $ 4,257

Intangible Assets, Net (Tables)

Intangible Assets, Net (Tables)	12 Months Ended
	Jan. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Carrying Amounts of Purchased Intangible Assets	The following tables provide a summary of the carrying amounts of purchased intangible assets: January 31, 2017 and 2016 Weighted average amortization period Gross amount Accumulated amortization Net amount (in thousands) Customer relationships 6 yrs $ 4,350 $ (4,350 ) $ — Intellectual property 3 yrs 310 (310 ) — Contract rights 2 yrs 1,380 (1,380 ) — Total $ 6,040 $ (6,040 ) $ —

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Jan. 31, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Marketable Securities	As of January 31, 2017, marketable securities consisted of the following (in thousands): Amortized Unrealized Unrealized Aggregate Cost Gains Losses Fair Value Certificates of deposit $ 5,240 $ — $ (3 ) $ 5,237 Commercial paper 2,495 — (2 ) 2,493 Corporate bonds 16,827 — (24 ) 16,803 U.S. government agencies 2,002 — (1 ) 2,001 Money market funds 1,433 — — 1,433 Total $ 27,997 $ — $ (30 ) $ 27,967 Included in cash and cash equivalents $ 1,433 $ — $ — $ 1,433 Included in short-term marketable securities $ 26,564 $ — $ (30 ) $ 26,534
Summary of Estimated Fair Value of Investments in Marketable Debt Securities, Accounted for as Available-for-sale Securities and Classified by Contractual Maturity Date of Securities	The following table summarizes the estimated fair value of our investments in marketable debt securities, accounted for as available-for-sale securities and classified by the contractual maturity date of the securities (in thousands): January 31, 2017 Due in one year $ 18,086 Due in one year through two years 3,213 Total $ 21,299

Fair Value Measurements of As28

Fair Value Measurements of Assets and Liabilities (Tables)	12 Months Ended
	Jan. 31, 2017
Fair Value Disclosures [Abstract]
Summary of Fair Value of Assets and Liabilities Measured on Recurring Basis	The following summarizes assets and liabilities that are measured at fair value on a recurring basis, by level, within the fair value hierarchy: January 31, 2017 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents—money market funds $ 12,260 $ — $ — $ 12,260 Restricted cash—money market funds 129 — — 129 Restricted cash—bank certificates of deposit 102 — — 102 Certificates of deposit — 5,236 — 5,236 Commercial paper — 2,493 — 2,493 Corporate bonds — 16,803 — 16,803 U.S. government agencies — 2,002 — 2,002 Total $ 12,491 $ 26,534 $ — $ 39,025 January 31, 2016 Level 1 Level 2 Level 3 Total (In thousands) Assets: Cash equivalents—money market funds $ 46,387 $ — $ — $ 46,387 Restricted cash—money market funds 129 — — 129 Restricted cash—bank certificates of deposit 102 — — 102 Total $ 46,618 $ — $ — $ 46,618

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Jan. 31, 2017
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following: January 31, 2017 2016 (in thousands) Computer software and equipment $ 17,238 $ 12,830 Furniture and fixtures 776 752 Leasehold improvements 4,560 4,366 Construction in progress 36 348 Gross property and equipment 22,610 18,296 Less accumulated depreciation and amortization (13,476 ) (9,886 ) Property and equipment, net $ 9,134 $ 8,410

Debt (Tables)

Debt (Tables)	12 Months Ended
	Jan. 31, 2017
Debt Disclosure [Abstract]
Schedule of Short-Term and Long-Term Debt Obligations	The following table represents the Company’s short-term and long-term debt obligations: January 31, Rate Maturity 2017 2016 (in thousands) Silicon Valley Bank: Revolving line of credit P+1.25% or L+2.5% October 2018 (1) $ (6,500 ) $ (6,500 ) Term loan P+1.25% or L+2.5% September 2019 (6,875 ) (9,375 ) Total debt (13,375 ) (15,875 ) Debt, current portion 9,000 9,000 Current portion of unamortized debt discount (19 ) (19 ) Current portion of debt, net 8,981 8,981 Debt, less current portion 4,375 6,875 Long-term portion of unamortized debt discount (29 ) (49 ) Long-term debt, net 4,346 6,826 Total debt, net $ 13,327 $ 15,807 (1 ) The Company may borrow, prepay, and reborrow loans from time to time before the maturity date.
Schedule of Future Principal Payments of Long Term Debt	Future principal payments of long-term debt as of January 31, 2017 were as follows: Principal (in thousands) Fiscal year ending January 31: 2018 $ — 2019 2,500 2020 1,875 Total $ 4,375

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Jan. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Committed Payments	Future committed payments as of January 31, 2017 were as follows (in thousands): Minimum service commitments Operating leases (in thousands) Fiscal year ending January 31: 2018 $ 1,270 $ 2,032 2019 318 2,251 2020 — 2,188 2021 — 2,057 Thereafter — — Total $ 1,588 $ 8,528

Stockholders Equity (Tables)

Stockholders Equity (Tables)	12 Months Ended
	Jan. 31, 2017
Equity [Abstract]
Schedule of Stock by Class	As of January 31, 2017 and 2016, the Company was authorized to issue up to 1,000,000,000 shares of common stock. Shares of common stock reserved for future issuance are as follows: January 31, 2017 Common stock outstanding 31,519,134 Stock options and restricted stock units outstanding 6,009,249 Shares reserved for future stock option issuances 1,252,807 Shares reserved for employee stock purchase plan 857,350 Common stock warrants outstanding 154,372 Total shares reserved 39,792,912
Schedule of Change in Fair Value of Preferred Stock Warrants	The change in the fair value of the preferred stock warrants was as follows (in thousands): Balance at January 31, 2015 $ 5,885 Decrease in fair value of warrants (3,542 ) Reclassified to additional paid-in capital (2,343 ) Balance at January 31, 2016 $ —
Schedule of Assumptions Used to Value Warrants Under Black-Scholes Option Pricing Model	Fair value of the warrants at the date of issuance was determined using the Black-Scholes option pricing model with the following assumptions: Series B Series C Series D Series D-1 Series D-1 Series D-1 Series D-1 Date of issuance November March 2008 April 2008 August 2012 May 2013 January 2014 November 2014 Fair value at date of issuance (in thousands) $ 18 $ 143 $ 82 $ 106 $ 1,446 $ 403 $ 3,633 Expected term in years 7.56 10.00 10.00 10.00 10.00 10.00 10.00 Expected volatility 70 % 55 % 55 % 55 % 55 % 52 % 52 % Risk-free interest rate 4.61 % 3.45 % 3.45 % 1.51 % 2.16 % 2.88 % 2.34 % Fair value of the warrants at the date of issuance was determined using the Black-Scholes option pricing model with the following assumptions (in thousands): Series F Date of issuance November Fair value at date of issuance $ 878 Expected term in years 5 Expected volatility 52 % Risk-free interest rate 1.64 %

Stock-Based Awards and Stock-33

Stock-Based Awards and Stock-Based Compensation (Tables)	12 Months Ended
	Jan. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock-Based Compensation Expense	Stock-based compensation included in the Company’s consolidated statements of operations is as follows: Fiscal year ended January 31, 2017 2016 2015 (in thousands) Cost of subscription services $ 595 $ 456 $ 237 Cost of professional services 1,009 454 61 Research and development 2,013 898 272 Sales and marketing 2,176 893 312 General and administrative 2,618 1,156 776 Total $ 8,411 $ 3,857 $ 1,658
Summary of Stock Option Activity	Stock option activity is as follows: Number of shares Weighted average exercise price Weighted average remaining contractual term Aggregate intrinsic value (in thousands) Balance at January 31, 2016 4,844,592 $ 4.49 6.6 years $ 14,268 Granted 785,100 11.07 Exercised (1,184,903 ) 2.14 Forfeited (112,140 ) 8.02 Expired (9,495 ) 7.19 Balance at January 31, 2017 4,323,154 $ 6.23 7.0 years $ 25,582 Vested and expected to vest as of January 31, 2017 4,194,375 $ 6.12 7.0 years $ 25,288 Exercisable as of January 31, 2017 2,461,232 $ 3.96 5.7 years $ 20,160
Summary of Restricted Stock Units Activity	Restricted stock unit activity is as follows: Number of shares Weighted average grant-date fair value Balance at January 31, 2016 860,472 $ 8.48 Granted 1,285,008 12.12 Released (361,902 ) 8.18 Forfeited (97,483 ) 8.68 Balance at January 31, 2017 1,686,095 $ 11.31
Schedule of Assumptions Used to Estimate Fair Value of Options Granted	The following assumptions were used to estimate the fair value of options granted: Fiscal year ended January 31, Stock Options 2017 2016 2015 Expected dividend yield — — — Expected volatility 45% — 47% 47% — 50% 52% — 53% Expected term (years) 6.25 6.25 6.25 Risk-free interest rate 1.26% — 2.23% 1.45% — 1.85% 1.39% — 1.95%
Schedule of Assumptions Used to Estimate Fair Value of Purchase Rights Granted Under ESPP	The following assumptions were used to estimate the fair value of purchase rights granted under the ESPP: Fiscal year ended January 31, ESPP 2017 2016 Expected dividend yield — — Expected volatility 38% — 42% 43% Expected term (years) 0.50 — 2.00 1.50 Risk-free interest rate 0.46% 0.08%

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Components of Income (Loss) Before Taxes	The components of income (loss) before taxes are as follows: Fiscal year ended January 31, 2017 2016 2015 (in thousands) United States $ (17,348 ) $ (25,006 ) $ (18,665 ) International 675 586 398 $ (16,673 ) $ (24,420 ) $ (18,267 )
Schedule of Income Tax Expense	Income tax expense consisted of the following: Fiscal year ended January 31, 2017 2016 2015 (in thousands) Current: United States $ — $ — $ — International 224 281 261 State 17 18 4 241 299 265 Deferred: United States — — — International — — — — — — Total income tax expense $ 241 $ 299 $ 265
Schedule of Reconciliation of Statutory Federal Rate and Company's Effective Tax Rate	The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented: Fiscal year ended January 31, 2017 2016 2015 Tax benefit at federal statutory rate 34 % 34 % 34 % State income taxes, net of federal effect 6 % 5 % 4 % Change in valuation allowance (36 )% (34 )% (35 )% Other (5 )% (6 )% (4 )% Total provision (1 )% (1 )% (1 )%
Schedule of Components of Net Deferred Tax Assets	Deferred income taxes reflect the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The components of net deferred tax assets as of January 31, 2017 and 2016, are as follows (in thousands): January 31, 2017 2016 (in thousands) Deferred tax assets: Federal and state net operating losses $ 86,214 $ 79,826 Research and development credits 3,176 2,247 Accruals and reserves 418 2,403 Amortization — 15 Deferred revenue 1,346 998 Property and equipment 565 1,183 Other 1,578 666 Total deferred tax assets 93,297 87,338 Valuation allowance (93,297 ) (87,338 ) Net deferred tax assets $ — $ —
Schedule of Unrecognized Tax Benefits	The following are changes in unrecognized tax benefits: (in thousands) Balance at January 31, 2015 $ 1,959 Additions based on tax positions related to the current year 409 Additions based on tax positions related to the prior year 93 Lapse of statute of limitations (6 ) Balance at January 31, 2016 2,455 Additions based on tax positions related to the current year 799 Additions based on tax positions related to the prior year 197 Decreases based on tax positions related to the prior year (39 ) Lapse of statute of limitations (21 ) Balance at January 31, 2017 $ 3,391

Basic and Diluted Net Loss Pe35

Basic and Diluted Net Loss Per Share (Tables)	12 Months Ended
	Jan. 31, 2017
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of the Company’s basic and diluted net loss per share of common stock under the two-class method attributable to common stockholders (in thousands, except per share data): Fiscal year ended January 31, 2017 2016 2015 (in thousands, except per share data) Numerator: Net loss $ (16,914 ) $ (24,719 ) $ (18,532 ) Denominator: Weighted-average common shares outstanding 30,593 18,545 2,769 Basic and diluted net loss per share $ (0.55 ) $ (1.33 ) $ (6.69 )
Schedule of Potentially Dilutive Common Shares Excluded from Diluted Weighted Average Common Shares Outstanding	The following is a table summarizing the potentially dilutive common shares that were excluded from diluted weighted-average common shares outstanding (in thousands): Fiscal year ended January 31, 2017 2016 2015 Shares of common stock issuable upon conversion of preferred stock — — 17,872 Shares of common stock issuable upon exercise of warrants 154 472 739 Shares of common stock issuable under stock option plans outstanding 6,009 5,705 4,704 Potential common shares excluded from diluted net loss per share 6,163 6,177 23,315

Description of the Business a36

Description of the Business and Summary of Significant Accounting Policies - Additional Information (Details)	Jul. 01, 2015USD ($)$ / sharesshares	Jun. 11, 2015	Jan. 31, 2017USD ($)Customer	Jan. 31, 2016USD ($)Customer	Jan. 31, 2015USD ($)Customer
Summary Of Significant Accounting Policies [Line Items]
Proceeds from initial public offering	$ 63,273,000			$ 58,844,000
Description of reverse stock split			On June 11, 2015, a four-to-one reverse stock split of the Company's then-outstanding common stock and convertible preferred stock was effected in connection with the IPO.
Reverse stock split conversion ratio		0.25
Deferred revenue, customer sales credits			$ 110,000	110,000
Restricted cash, short term			$ 102,000	286,000
Past due period of allowance for doubtful accounts			90 days
Impairment losses on long-lived assets, including goodwill			$ 0	0	$ 0
Foreign currency hedged			0	0
Advertising expense			1,337,000	$ 1,362,000	$ 1,131,000
Capitalized software development cost			$ 0
Customer Concentration Risk | Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Number of customers represented more than 10% | Customer			0	0
Concentration risk, percentage			10.00%	10.00%
Customer Concentration Risk | Revenue
Summary Of Significant Accounting Policies [Line Items]
Number of customers represented more than 10% | Customer			0	0	0
Concentration risk, percentage			10.00%	10.00%	10.00%
Certificates of Deposit
Summary Of Significant Accounting Policies [Line Items]
Restricted cash, short term			$ 102,000	$ 102,000
Money Market Accounts
Summary Of Significant Accounting Policies [Line Items]
Restricted cash, short term			0	184,000
Restricted cash, long term			$ 129,000	$ 129,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Subscription services contract period			1 year
Property and equipment, estimated useful life			2 years
Intangible asset, useful life			2 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Subscription services contract period			3 years
Property and equipment, estimated useful life			5 years
Intangible asset, useful life			6 years
IPO
Summary Of Significant Accounting Policies [Line Items]
Common stock shares issued | shares	7,909,125
Common stock price per share | $ / shares	$ 8
Proceeds after deducting underwriters discounts, commissions and offering costs	$ 58,844,000
Paid offering costs	$ 4,298,000
Conversion of preferred stock to common stock | shares	17,871,971
Over Allotment Option
Summary Of Significant Accounting Policies [Line Items]
Common stock shares issued | shares	1,055,625

Description of the Business a37

Description of the Business and Summary of Significant Accounting Policies - Summary of the Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Receivables [Abstract]
Balance at Beginning of period	$ 40	$ 40	$ 40
Provision, net of recoveries	499	10	88
Write-offs	(299)	(10)	(88)
Balance at end of period	$ 240	$ 40	$ 40

Description of the Business a38

Description of the Business and Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Property and Equipment (Detail)	12 Months Ended
	Jan. 31, 2017
Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	2 years
Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Computer software and equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Furniture and fixtures | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	2 years
Furniture and fixtures | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Leasehold improvements | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	2 years
Leasehold improvements | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life	6 years

Balance Sheet Components - Summ

Balance Sheet Components - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Accounts receivable	$ 25,458	$ 19,378
Unbilled accounts receivable	1,229	940
Allowance for doubtful accounts	(240)	(40)
Accounts receivable, net	$ 26,447	$ 20,278

Balance Sheet Components - Su40

Balance Sheet Components - Summary of Accrued Expenses (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Accrued compensation and benefits	$ 4,528	$ 5,148
Accrued expenses	1,626	1,909
Deferred rent	965	948
Accrued legal settlement		500
Sales tax payable	432	460
Other	804	547
Total accrued expenses	$ 8,355	$ 9,512

Balance Sheet Components - Su41

Balance Sheet Components - Summary of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Deferred rent	$ 3,124	$ 4,088
Deferred tax liabilities	205	169
Total other long-term liabilities	$ 3,329	$ 4,257

Intangible Assets, Net - Summar

Intangible Assets, Net - Summary of Carrying Amounts of Purchased Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Finite Lived Intangible Assets [Line Items]
Intangible assets, Gross amount	$ 6,040	$ 6,040
Intangible assets, Accumulated amortization	$ (6,040)	$ (6,040)
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Intangible asset, useful life	6 years	6 years
Intangible assets, Gross amount	$ 4,350	$ 4,350
Intangible assets, Accumulated amortization	$ (4,350)	$ (4,350)
Intellectual Property
Finite Lived Intangible Assets [Line Items]
Intangible asset, useful life	3 years	3 years
Intangible assets, Gross amount	$ 310	$ 310
Intangible assets, Accumulated amortization	$ (310)	$ (310)
Contract Rights
Finite Lived Intangible Assets [Line Items]
Intangible asset, useful life	2 years	2 years
Intangible assets, Gross amount	$ 1,380	$ 1,380
Intangible assets, Accumulated amortization	$ (1,380)	$ (1,380)

Intangible Assets, Net - Additi

Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 0	$ 0	$ 707

Marketable Securities - Summary

Marketable Securities - Summary of Marketable Securities (Details) $ in Thousands	Jan. 31, 2017USD ($)
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 27,997
Unrealized Losses	(30)
Aggregate Fair Value	27,967
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,240
Unrealized Losses	(3)
Aggregate Fair Value	5,237
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,495
Unrealized Losses	(2)
Aggregate Fair Value	2,493
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,827
Unrealized Losses	(24)
Aggregate Fair Value	16,803
U.S. Government Agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,002
Unrealized Losses	(1)
Aggregate Fair Value	2,001
Money Market Funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,433
Aggregate Fair Value	1,433
Included in Cash and Cash Equivalents
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,433
Aggregate Fair Value	1,433
Included in Short-term Marketable Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	26,564
Unrealized Losses	(30)
Aggregate Fair Value	$ 26,534

Marketable Securities - Additio

Marketable Securities - Additional Information (Details)	Jan. 31, 2016USD ($)
Investments Debt And Equity Securities [Abstract]
Marketable securities	$ 0

Marketable Securities - Summa46

Marketable Securities - Summary of Estimated Fair Value of Investments in Marketable Debt Securities, Accounted for as Available-for-sale Securities and Classified by Contractual Maturity Date of Securities (Details) $ in Thousands	Jan. 31, 2017USD ($)
Investments Debt And Equity Securities [Abstract]
Due in one year	$ 18,086
Due in one year through two years	3,213
Total	$ 21,299

Fair Value Measurements of As47

Fair Value Measurements of Assets and Liabilities - Summary of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Assets:
Assets fair value	$ 39,025	$ 46,618
Corporate Bonds
Assets:
Assets fair value	16,803
Fair Value, Inputs, Level 1
Assets:
Assets fair value	12,491	46,618
Fair Value, Inputs, Level 2
Assets:
Assets fair value	26,534
Fair Value, Inputs, Level 2 | Corporate Bonds
Assets:
Assets fair value	16,803
Money Market Funds
Assets:
Cash equivalents	12,260	46,387
Restricted cash	129	129
Money Market Funds | Fair Value, Inputs, Level 1
Assets:
Cash equivalents	12,260	46,387
Restricted cash	129	129
Bank Certificates of Deposit
Assets:
Restricted cash	102	102
Assets fair value	5,236
Bank Certificates of Deposit | Fair Value, Inputs, Level 1
Assets:
Restricted cash	102	$ 102
Bank Certificates of Deposit | Fair Value, Inputs, Level 2
Assets:
Assets fair value	5,236
Commercial Paper
Assets:
Assets fair value	2,493
Commercial Paper | Fair Value, Inputs, Level 2
Assets:
Assets fair value	2,493
U.S. Government Agencies
Assets:
Assets fair value	2,002
U.S. Government Agencies | Fair Value, Inputs, Level 2
Assets:
Assets fair value	$ 2,002

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Property Plant And Equipment [Line Items]
Gross property and equipment	$ 22,610	$ 18,296
Less accumulated depreciation and amortization	(13,476)	(9,886)
Property and equipment, net	9,134	8,410
Computer software and equipment
Property Plant And Equipment [Line Items]
Gross property and equipment	17,238	12,830
Furniture and fixtures
Property Plant And Equipment [Line Items]
Gross property and equipment	776	752
Leasehold improvements
Property Plant And Equipment [Line Items]
Gross property and equipment	4,560	4,366
Construction in Progress
Property Plant And Equipment [Line Items]
Gross property and equipment	$ 36	$ 348

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Property Plant And Equipment [Abstract]
Depreciation and amortization	$ 3,825	$ 3,133	$ 1,972

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($)	1 Months Ended					12 Months Ended
	Oct. 31, 2015	Nov. 30, 2014	Oct. 31, 2014	Jan. 31, 2014	May 31, 2013	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Dec. 31, 2012
Debt Instrument [Line Items]
Term loan outstanding						$ 13,327,000	$ 15,807,000
Loss on extinguishment of debt							1,524,000
Amortization expense related to debt issuance costs and discounts						22,000	3,512,000	$ 771,000
Total interest expense						$ 501,000	6,021,000	$ 3,087,000
Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Line of credit facility, expiration date			Aug. 31, 2016
Debt related fees			$ 50,000
Line of credit facility, original expiration date			Aug. 31, 2015
Maturity date			Oct. 31, 2017
Term loan borrowing			$ 10,000,000
Sixth Amendment And Related Loan And Security Agreement | Series D-1 Convertible Preferred Stock
Debt Instrument [Line Items]
Share purchased						156,250
Class of warrant exercise price						$ 7.60
Initial fair value of warrants						$ 1,866,000
LOC
Debt Instrument [Line Items]
Line of credit facility							6,500,000
Line of credit facility, remaining borrowing capacity							8,500,000
Interest rate on revolving line of credit						3.28%
LOC | Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 11,000,000	13,000,000
Wellington Agreement
Debt Instrument [Line Items]
Debt, description of variable interest rate						The operating line of credit carried a variable interest rate of the greater of prime plus 2.5% or 6.0% per annum.
Term loan outstanding			15,408,000	$ 13,000,000	$ 10,000,000
Line of credit facility, expiration date					May 31, 2016
Debt related fees			$ 97,500	45,000	$ 154,000
Fixed interest rate			9.50%		9.50%
Maturity date						Oct. 31, 2017
Line of credit facility					$ 2,000,000
Unpaid principal amount, per annum interest rate					2.50%
Maturity term description						Both the term loan and the operating line of credit had a maturity of May 2016, but could be extended annually to May 2017 and 2018 at the option of the Company, upon the satisfaction of certain conditions.
Loan commitment				$ 15,000,000
Unamortized debt issuance cost							2,564,000
Wellington Agreement | Series D-1 Convertible Preferred Stock
Debt Instrument [Line Items]
Share purchased		147,936	147,936	31,579	126,315
Class of warrant exercise price		$ 7.60	$ 7.60	$ 7.60	$ 7.60
Initial fair value of warrants			$ 1,767,000	$ 403,000	$ 1,446,000
Proceeds from equity financing		$ 5,000,000	$ 5,000,000	$ 5,000,000	$ 5,000,000
Additional shares authorized				250,000
Minimum | Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Percentage of aggregate principal balance						2.50%
Minimum | Wellington Agreement
Debt Instrument [Line Items]
Percentage of aggregate principal balance			2.50%
Maximum | Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Percentage of aggregate principal balance						7.50%
Maximum | Wellington Agreement
Debt Instrument [Line Items]
Percentage of aggregate principal balance			7.50%
Proceeds from equity financing				$ 5,000,000
Prime | Wellington Agreement
Debt Instrument [Line Items]
Debt variable interest rate					2.50%
LIBOR | Wellington Agreement
Debt Instrument [Line Items]
Debt variable interest rate					6.00%
Silicon Valley Bank Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ 7,000,000
Debt, description of variable interest rate						The line of credit carried a variable annual interest rate equal to the greater of prime plus 2.25% or 5.5%.
Line of credit facility, expiration date									Aug. 31, 2014
Silicon Valley Bank Agreement | Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 8,000,000
Silicon Valley Bank Agreement | LOC
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 15,000,000			$ 8,000,000
Debt, description of variable interest rate						The LOC carries a variable interest rate equal to Prime plus 1.25% or LIBOR plus 2.5%.
Line of credit facility, expiration date	Oct. 31, 2018			Aug. 31, 2015
Line of credit facility, original expiration date	Aug. 31, 2016
Silicon Valley Bank Agreement | Wellington Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 7,000,000
Term loan outstanding					2,850,000
Line of credit facility, current borrowing capacity					5,000,000
Debt related fees					25,000
Debt, face amount					8,000,000
Silicon Valley Bank Agreement | Term Loan Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 10,000,000
Debt, description of variable interest rate						The SVB Term Loan carries a variable interest rate of Prime plus 1.25% or LIBOR plus 2.5%
Term loan outstanding						$ 6,875,000	$ 9,375,000		$ 3,000,000
Line of credit facility, expiration date						Sep. 30, 2019
Debt variable interest rate									1.75%
Term loan, advance									$ 1,500,000
Term loan, additional advance									$ 1,500,000
Debt instrument, interest rate terms						The term loan carried a variable annual interest rate of prime plus 1.75% and required the Company to make monthly interest only payments for six months.
Number of equal monthly installment									30 months
Interest rate on revolving line of credit						3.28%
Loss on extinguishment of debt						$ 1,524,000
Frequency of principal and interest payment						quarterly principal payments and monthly interest payments through the maturity date in September 2019
Silicon Valley Bank Agreement | Term Loan Facility | Wellington Agreement
Debt Instrument [Line Items]
Cancellation of term loan facility					$ 3,000,000
Silicon Valley Bank Agreement | Term Loan Facility | Minimum
Debt Instrument [Line Items]
Frequency of principal and interest payment maturity date									2015-08
Silicon Valley Bank Agreement | Term Loan Facility | Maximum
Debt Instrument [Line Items]
Frequency of principal and interest payment maturity date									2016-03
Silicon Valley Bank Agreement | Prime | LOC
Debt Instrument [Line Items]
Debt variable interest rate	1.25%
Silicon Valley Bank Agreement | Prime | Term Loan Facility
Debt Instrument [Line Items]
Debt variable interest rate	1.25%								2.25%
Silicon Valley Bank Agreement | LIBOR | LOC
Debt Instrument [Line Items]
Debt variable interest rate	2.50%
Silicon Valley Bank Agreement | LIBOR | Term Loan Facility
Debt Instrument [Line Items]
Debt variable interest rate	2.50%								5.50%
Mezzanine Loan and Security Agreement | Sixth Amendment And Related Loan And Security Agreement
Debt Instrument [Line Items]
Term loan outstanding						$ 10,000,000
Fixed interest rate						9.50%
Original Term Loan Plus | Wellington Agreement
Debt Instrument [Line Items]
Term loan outstanding			13,000,000
Operating Loan Plus | Wellington Agreement
Debt Instrument [Line Items]
Term loan outstanding			408,000
Interest Accrued | Wellington Agreement
Debt Instrument [Line Items]
Term loan outstanding			$ 2,000,000

Debt - Schedule of Short Term a

Debt - Schedule of Short Term and Long Term Debt Obligations (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 31, 2017	Jan. 31, 2016
Line Of Credit Facility [Line Items]
Total debt		$ (13,375)	$ (15,875)
Debt, current portion		9,000	9,000
Current portion of unamortized debt discount		(19)	(19)
Current portion of debt, net		8,981	8,981
Debt, less current portion		4,375	6,875
Long-term portion of unamortized debt discount		(29)	(49)
Long-term debt, net		4,346	6,826
Total debt, net		$ 13,327	15,807
Silicon Valley Bank | Term Loan
Line Of Credit Facility [Line Items]
Debt, description of variable interest rate		P+1.25% or L+2.5%
Silicon Valley Bank | Revolving line of credit
Line Of Credit Facility [Line Items]
Debt, description of variable interest rate		P+1.25% or L+2.5%
Silicon Valley Bank | Revolving line of credit | Prime
Line Of Credit Facility [Line Items]
Debt instrument credit facility maturity date	[1]	Oct. 31, 2018
Silicon Valley Bank | Revolving line of credit | Prime
Line Of Credit Facility [Line Items]
Total debt		$ (6,500)	(6,500)
Wellington Financial | Term Loan
Line Of Credit Facility [Line Items]
Debt instrument credit facility maturity date		Sep. 30, 2019
Total debt		$ (6,875)	$ (9,375)
[1]	The Company may borrow, prepay, and reborrow loans from time to time before the maturity date.

Debt - Future Principal Payment

Debt - Future Principal Payment of Long Term Debt (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Debt Disclosure [Abstract]
2,019	$ 2,500
2,020	1,875
Total	$ 4,375	$ 6,875

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Committed Payments (Details) $ in Thousands	Jan. 31, 2017USD ($)
Future Minimum Lease Payments under Non-cancelable Minimum Service Commitments
2,018	$ 1,270
2,019	318
Total	1,588
Future Minimum Lease Payments under Non-cancelable Operating Leases
2,018	2,032
2,019	2,251
2,020	2,188
2,021	2,057
Total	$ 8,528

Commitments and Contingencies54

Commitments and Contingencies - Additional Information (Details) - USD ($)	Nov. 25, 2013	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Commitments And Contingencies [Line Items]
Total rent expense						$ 1,275,000	$ 2,212,000	$ 1,355,000
Settlement agreement, date						Nov. 25, 2013
Mutual commitment agreement period						7 years
Payments for legal settlements	$ 2,000,000	$ 500,000	$ 500,000	$ 500,000	$ 500,000
General and Administrative
Commitments And Contingencies [Line Items]
Net of estimated sublease income							693,000
Abandoned leasehold improvements written off							$ 245,000

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($)	1 Months Ended					2 Months Ended	12 Months Ended
	Nov. 30, 2014	Oct. 31, 2014	Jan. 31, 2014	May 31, 2013	Aug. 31, 2012	Jan. 31, 2016	Jan. 31, 2017
Equity [Line Items]
Preferred stock, shares authorized						20,000,000	20,000,000
Preferred stock, par value						$ 0.001	$ 0.001
Common stock, shares authorized						1,000,000,000	1,000,000,000
Common stock, par value						$ 0.001	$ 0.001
Common stock, shares issued						188,744
Common stock, shares tendered						211,216
Bank Debt Facility Agreement
Equity [Line Items]
Class of warrant exercisable period							10 years
Exercisable period after the completion of initial public offering							7 years
Centive, Inc.
Equity [Line Items]
Number of shares distributed to former shareholders							41,553
Series E Convertible Preferred Stock
Equity [Line Items]
Convertible preferred stock, shares reserved for issuance							399,960
Convertible preferred stock exercise price							$ 0.9580
Convertible preferred stock expiration date							Jan. 22, 2019
Series C Convertible Preferred Stock | Bank Debt Facility Agreement
Equity [Line Items]
Share purchased							35,433
Class of warrant exercise price							$ 5.08
Series D Convertible Preferred Stock | Bank Debt Facility Agreement
Equity [Line Items]
Share purchased							15,789
Class of warrant exercise price							$ 7.60
Series D-1 Convertible Preferred Stock | Wellington Agreement
Equity [Line Items]
Share purchased	147,936	147,936	31,579	126,315
Class of warrant exercise price	$ 7.60	$ 7.60	$ 7.60	$ 7.60
Exercisable period after the completion of initial public offering			5 years
Warrant exercisable term prior to issuance date	10 years		10 years	10 years
Proceeds from equity financing	$ 5,000,000	$ 5,000,000	$ 5,000,000	$ 5,000,000
Amount available to calculate price per share	$ 1,124,315		240,000	$ 960,000
Series D-1 Convertible Preferred Stock | Wellington Agreement | Preferred Stock
Equity [Line Items]
Conversion of stock to warrant, Description							If, instead of Series D-1, the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by dividing $960,000 by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance or five years after a registered initial public offering of the Company’s common stock.
Series D-1 Convertible Preferred Stock | Wellington Agreement | Common Stock
Equity [Line Items]
Conversion of stock to warrant, Description							If, instead of Series D-1, the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by dividing $240,000 by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to the earlier of 10 years from the date of issuance or five years after a registered initial public offering of the Company’s common stock.
Series D-1 Convertible Preferred Stock | SVB Agreement
Equity [Line Items]
Share purchased	156,250				9,868
Class of warrant exercise price	$ 7.60				$ 7.60
Conversion of stock to warrant, Description							If the holder elects to receive warrants for the Company’s next round of equity financing, the number of shares is calculated by multiplying the aggregate original principal amount by 2.5% and then dividing by the price per share of the equity round. The warrant is exercisable at any time during its term, prior to 10 years from the date of issuance.
Percentage of Original Principal Amount to Calculate Price Per Share					2.50%
Warrant exercisable term prior to issuance date	10 years				10 years
Series F Convertible Preferred Stock
Equity [Line Items]
Share purchased	216,175
Class of warrant exercise price	$ 9.8296
Class of warrant exercisable period	5 years
Maximum
Equity [Line Items]
Preferred stock, shares authorized							20,000,000
Maximum | Wellington Agreement
Equity [Line Items]
Proceeds from equity financing			$ 5,000,000
IPO
Equity [Line Items]
Convertible preferred stock converted into shares of common stock							17,871,971
Common stock, par value							$ 0.001
IPO | Maximum
Equity [Line Items]
Common stock, shares authorized							1,000,000,000
IPO | Minimum
Equity [Line Items]
Common stock, shares authorized							120,000,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Shares of Common Stock Reserved (Details) - shares	Jan. 31, 2017	Jan. 31, 2016
Equity [Line Items]
Common stock, shares outstanding	31,519,134	29,542,537
Stock options and restricted stock units outstanding	6,009,249
Total shares reserved	39,792,912
Shares reserved for employee stock purchase plan	857,350
Common stock warrants outstanding	154,372
Stock Option
Equity [Line Items]
Total shares reserved	1,252,807

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Change in Fair Value of Preferred Stock Warrants (Details) - Preferred Stock Warrants $ in Thousands	12 Months Ended
	Jan. 31, 2016USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at January 31, 2015	$ 5,885
Decrease in fair value of warrants	(3,542)
Reclassified to additional paid-in capital	$ (2,343)

Stockholders Equity - Schedule

Stockholders Equity - Schedule of Assumptions Used to Value Warrants Under Black-Scholes Option Pricing Model (Details) $ in Thousands	12 Months Ended
	Jan. 31, 2017USD ($)
Series B Convertible Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2006-11
Fair value at date of issuance (in thousands)	$ 18
Expected term in years	7 years 6 months 22 days
Expected volatility	70.00%
Risk-free interest rate	4.61%
Series C Convertible Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2008-03
Fair value at date of issuance (in thousands)	$ 143
Expected term in years	10 years
Expected volatility	55.00%
Risk-free interest rate	3.45%
Series D Convertible Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2008-04
Fair value at date of issuance (in thousands)	$ 82
Expected term in years	10 years
Expected volatility	55.00%
Risk-free interest rate	3.45%
Series D-1 August 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2012-08
Fair value at date of issuance (in thousands)	$ 106
Expected term in years	10 years
Expected volatility	55.00%
Risk-free interest rate	1.51%
Series D-1 May 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2013-05
Fair value at date of issuance (in thousands)	$ 1,446
Expected term in years	10 years
Expected volatility	55.00%
Risk-free interest rate	2.16%
Series D-1 January 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2014-01
Fair value at date of issuance (in thousands)	$ 403
Expected term in years	10 years
Expected volatility	52.00%
Risk-free interest rate	2.88%
Series D-1 November 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2014-11
Fair value at date of issuance (in thousands)	$ 3,633
Expected term in years	10 years
Expected volatility	52.00%
Risk-free interest rate	2.34%
Series F Convertible Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Date of issuance	2014-11
Fair value at date of issuance (in thousands)	$ 878
Expected term in years	5 years
Expected volatility	52.00%
Risk-free interest rate	1.64%

Stock-Based Awards and Stock-59

Stock-Based Awards and Stock-Based Compensation - Additional Information (Details) - USD ($)	Feb. 02, 2016	Jun. 30, 2015	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance			39,792,912
Weighted average grant date fair value for options granted			$ 5.16	$ 4.29	$ 1.08
Aggregate intrinsic value of stock options exercised			$ 10,838,000	$ 4,510,000	$ 1,344,000
Unrecognized compensation cost			$ 7,808,000
Share based compensation expense, weighted average amortization period			2 years 11 months 5 days
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost			$ 17,282,000
Share based compensation expense, weighted average amortization period			3 years 3 months 18 days
RSU conversion basis			100.00%
Vesting period			4 years
2005 Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance		0
2015 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance			1,252,799
Annual increment to shares reserved for issuance, fixed limit	3,000,000
Annual increment to shares reserved for issuance, as percentage of shares outstanding	5.00%
2015 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance		600,000
Annual increment to shares reserved for issuance, fixed limit	1,180,000
Annual increment to shares reserved for issuance, as percentage of shares outstanding	2.00%
Share-based compensation discount from market price, purchase date		15.00%
Share-based compensation, purchase price of common stock at fair market value percentage		85.00%
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost			$ 533,000
Share based compensation expense, weighted average amortization period			10 months 17 days

Stock-Based Awards and Stock-60

Stock-Based Awards and Stock-Based Compensation- Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	$ 8,411	$ 3,857	$ 1,658
Cost of Subscription Services
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	595	456	237
Cost of Professional Services
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	1,009	454	61
Research and Development
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	2,013	898	272
Sales and Marketing
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	2,176	893	312
General and Administrative
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Stock-based compensation expense	$ 2,618	$ 1,156	$ 776

Stock-Based Awards and Stock-61

Stock-Based Awards and Stock-Based Compensation- Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Number of shares
Number of shares, Beginning balance	4,844,592
Number of shares, Granted	785,100
Number of shares, Exercised	(1,184,903)
Number of shares, Forfeited	(112,140)
Number of shares, Expired	(9,495)
Number of shares, Ending balance	4,323,154	4,844,592
Number of shares, Vested and expected to vest	4,194,375
Number of shares, Exercisable	2,461,232
Weighted average exercise price
Weighted average exercise price, Beginning balance	$ 4.49
Weighted average exercise price, Granted	11.07
Weighted average exercise price, Exercised	2.14
Weighted average exercise price, Forfeited	8.02
Weighted average exercise price, Expired	7.19
Weighted average exercise price, Ending balance	6.23	$ 4.49
Weighted average exercise price, Vested and expected to vest	6.12
Weighted average exercise price, Exercisable	$ 3.96
Weighted average remaining contractual term
Weighted average remaining contractual term	7 years	6 years 7 months 6 days
Weighted average remaining contractual term, Vested and expected to vest	7 years
Weighted average remaining contractual term, Exercisable	5 years 8 months 12 days
Aggregate intrinsic value
Aggregate intrinsic value, Balance	$ 25,582	$ 14,268
Aggregate intrinsic value, Vested and expected to vest	25,288
Aggregate intrinsic value, Exercisable	$ 20,160
Restricted Stock Units
Number of shares
Number of shares, Beginning balance	860,472
Number of shares, Granted	1,285,008
Number of shares, Released	(361,902)
Number of shares, Forfeited	(97,483)
Number of shares, Ending balance	1,686,095	860,472
Weighted average grand-date fair value
Weighted average grand-date fair value, Beginning balance	$ 8.48
Weighted average grand-date fair value, Granted	12.12
Weighted average grand-date fair value, Released	8.18
Weighted average grand-date fair value, Forfeited	8.68
Weighted average grand-date fair value, Ending balance	$ 11.31	$ 8.48

Stock-Based Awards and Stock-62

Stock-Based Awards and Stock-Based Compensation- Schedule of Assumptions Used to Estimate Fair Value of Options Granted (Details) - Employee Stock Option	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, minimum	45.00%	47.00%	52.00%
Expected volatility, maximum	47.00%	50.00%	53.00%
Expected term (years)	6 years 3 months	6 years 3 months	6 years 3 months
Risk-free interest rate, minimum	1.26%	1.45%	1.39%
Risk-free interest rate, maximum	2.23%	1.85%	1.95%

Stock-Based Awards and Stock-63

Stock-Based Awards and Stock-Based Compensation- Schedule of Assumptions Used to Estimate Fair Value of Purchase Rights Granted Under ESPP (Details) - Employee Stock Purchase Plan	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility		43.00%
Expected volatility, minimum	38.00%
Expected volatility, maximum	42.00%
Expected term (years)		1 year 6 months
Risk-free interest rate, minimum	0.46%	0.08%
Risk-free interest rate, maximum	0.87%	0.72%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (years)	6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (years)	2 years

Income Taxes - Components of In

Income Taxes - Components of Income (Loss) Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ (17,348)	$ (25,006)	$ (18,665)
International	675	586	398
Loss before income taxes	$ (16,673)	$ (24,420)	$ (18,267)

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Current:
International	$ 224	$ 281	$ 261
State	17	18	4
Total current tax provision	241	299	265
Deferred:
Total income tax expense	$ 241	$ 299	$ 265

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Statutory Federal Rate and Company's Effective Tax Rate (Details)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Income Tax Disclosure [Abstract]
Tax benefit at federal statutory rate	34.00%	34.00%	34.00%
State income taxes, net of federal effect	6.00%	5.00%	4.00%
Change in valuation allowance	(36.00%)	(34.00%)	(35.00%)
Other	(5.00%)	(6.00%)	(4.00%)
Total provision	(1.00%)	(1.00%)	(1.00%)

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Deferred tax assets:
Federal and state net operating losses	$ 86,214	$ 79,826
Research and development credits	3,176	2,247
Accruals and reserves	418	2,403
Amortization		15
Deferred revenue	1,346	998
Property and equipment	565	1,183
Other	1,578	666
Total deferred tax assets	93,297	87,338
Valuation allowance	$ (93,297)	$ (87,338)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Operating Loss Carryforwards [Line Items]
Increase in valuation allowance	$ 5,959,000	$ 8,360,000
Federal net operating loss carryforwards	239,952,000
State net operating loss carryforwards	84,242,000
Unrecognized tax benefits potentially affect income tax expense if recognized	205,000	$ 169,000
Federal
Operating Loss Carryforwards [Line Items]
Research and development credits	$ 3,821,000
Net operating loss carryforwards, expiration date	Dec. 31, 2019
State
Operating Loss Carryforwards [Line Items]
Research and development credits	$ 2,532,000
Net operating loss carryforwards, expiration date	Dec. 31, 2017

Income Taxes - Schedule of Chan

Income Taxes - Schedule of Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Beginning balance	$ 2,455	$ 1,959
Additions based on tax positions related to the current year	799	409
Additions based on tax positions related to the prior year	197	93
Decreases based on tax positions related to the prior year	(39)
Lapse of statute of limitations	(21)	(6)
Ending balance	$ 3,391	$ 2,455

401(k) Plan - Additional Inform

401(k) Plan - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Employer discretionary contribution amount	$ 353,000	$ 267,000	$ 191,000
One Year Anniversary
Defined Benefit Plan Disclosure [Line Items]
Employer contribution annual vesting percentage	50.00%
Second Year Anniversary
Defined Benefit Plan Disclosure [Line Items]
Employer contribution annual vesting percentage	50.00%

Basic and Diluted Net Loss Pe71

Basic and Diluted Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Numerator:
Net loss	$ (16,914)	$ (24,719)	$ (18,532)
Denominator:
Weighted-average common shares outstanding	30,593	18,545	2,769
Basic and diluted net loss per share	$ (0.55)	$ (1.33)	$ (6.69)

Basic and Diluted Net Loss Pe72

Basic and Diluted Net Loss Per Share - Potentially Dilutive Common Shares Excluded from Diluted Weighted-Average Common Shares Outstanding (Details) - shares shares in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential common shares excluded from diluted net loss per share	6,163	6,177	23,315
Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential common shares excluded from diluted net loss per share			17,872
Warrant
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential common shares excluded from diluted net loss per share	154	472	739
Stock Option
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential common shares excluded from diluted net loss per share	6,009	5,705	4,704

Geographic Concentrations - Add

Geographic Concentrations - Additional Information (Details) - Revenue - Country	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net Property and Equipment, percentage	95.00%	95.00%
Customer Concentration Risk
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk, percentage	10.00%	10.00%	10.00%
Customer Concentration Risk | United States
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk, percentage	91.00%	90.00%	92.00%
Geographic Concentrations
Revenues From External Customers And Long Lived Assets [Line Items]
Individual country exceeded 10% of total revenue	0	0	0