MaxPoint Interactive (MXPT) 10-Q 10 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Nov. 04, 2016
Document And Entity Information
Entity Registrant Name	MAXPOINT INTERACTIVE, INC.
Entity Central Index Key	1,611,231
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		6,631,639
Entity Current Reporting Status	Yes

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 24,122	$ 41,143
Accounts receivable, net	35,147	43,336
Prepaid expenses and other current assets	1,974	1,246
Restricted cash, short-term	0	1,861
Total current assets	61,243	87,586
Property, equipment and software, net	20,058	19,385
Other long-term assets	57	315
Total assets	81,358	107,286
Current liabilities:
Accounts payable	10,164	14,987
Accrued expenses and other current liabilities	9,310	8,386
Short-term debt	26,125	31,225
Total current liabilities	45,599	54,598
Other long-term liabilities	1,280	955
Total liabilities	46,879	55,553
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.00005 par value; 500,000,000 shares authorized, 6,560,987 and 6,605,137 shares issued and outstanding as of December 31, 2015 and September 30, 2016, respectively	1	1
Additional paid-in capital	106,305	103,114
Accumulated other comprehensive loss	(179)	(82)
Accumulated deficit	(71,648)	(51,300)
Total stockholders’ equity	34,479	51,733
Total liabilities and stockholders’ equity	$ 81,358	$ 107,286

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
Common stock
Common shares par value (in usd per share)	$ 0.00005	$ 0.00005
Common shares authorized	500,000,000	500,000,000
Common shares issued	6,605,137	6,560,987
Common shares outstanding	6,605,137	6,560,987

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenue	$ 37,418	$ 35,969	$ 102,807	$ 99,135
Traffic acquisition costs	12,489	12,935	35,352	38,053
Other cost of revenue	5,135	4,280	14,710	10,863
Gross profit	19,794	18,754	52,745	50,219
Operating expenses:
Sales and marketing	11,182	12,883	37,736	38,521
Research and development	7,083	6,127	20,671	16,206
General and administrative	4,188	4,347	13,889	11,442
Total operating expenses	22,453	23,357	72,296	66,169
Loss from operations	(2,659)	(4,603)	(19,551)	(15,950)
Other expense (income):
Interest expense	261	190	761	1,060
Interest income	0	0	(3)	0
Amortization and write-off of debt discount	0	0	0	1,108
Amortization and write-off of deferred financing costs	11	8	39	189
Derivative fair value adjustment related to common stock warrants	0	0	0	(482)
Total other expense	272	198	797	1,875
Loss before income taxes	(2,931)	(4,801)	(20,348)	(17,825)
Provision for income taxes	0	0	0	0
Net loss	$ (2,931)	$ (4,801)	$ (20,348)	$ (17,825)
Net loss per basic and diluted share of common stock (in usd per share)	$ (0.44)	$ (0.74)	$ (3.09)	$ (3.50)
Weighted-average shares used to compute net loss per basic and diluted share of common stock	6,599,233	6,485,755	6,582,118	5,089,110

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,931)	$ (4,801)	$ (20,348)	$ (17,825)
Other comprehensive loss:
Foreign currency translation adjustments	(22)	(22)	(97)	(14)
Comprehensive loss	$ (2,953)	$ (4,823)	$ (20,445)	$ (17,839)

Condensed Consolidated Stateme6

Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance - beginning of period ( in shares) at Dec. 31, 2015	6,560,987	6,560,987
Balance - beginning of period at Dec. 31, 2015	$ 51,733	$ 1	$ 103,114	$ (82)	$ (51,300)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options ( in shares)	29,875	29,875
Exercise of stock options	$ 106		106
Issuance of common stock under employee stock purchase plan (in shares)		29,493
Issuance of common stock under employee stock purchase plan	202		202
Repurchases of common stock (in shares)		(15,197)
Repurchases of common stock	(125)		(125)
Extinguishment of fractional shares resulting from reverse stock split (in shares)		(21)
Extinguishment of fractional shares resulting from reverse stock split	0
Stock-based compensation	3,008		3,008
Foreign currency translation adjustments	(97)			(97)
Net loss	$ (20,348)				(20,348)
Balance - end of period ( in shares) at Sep. 30, 2016	6,605,137	6,605,137
Balance - end of period at Sep. 30, 2016	$ 34,479	$ 1	$ 106,305	$ (179)	$ (71,648)

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net loss	$ (20,348)	$ (17,825)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	7,137	4,270
Stock-based compensation expense	2,678	2,756
Change in fair value of warrants	0	(482)
Bad debt expense	324	177
Loss on disposal of asset	4	0
Amortization and write-off of debt discount	0	1,108
Amortization and write-off of deferred financing costs	39	189
Changes in operating assets and liabilities:
Accounts receivable	7,802	6,855
Prepaid expenses and other current assets	(608)	(1,038)
Security deposits	(19)	(41)
Accounts payable	(5,150)	(5,611)
Accrued expenses and other current liabilities	888	4,653
Other long-term liabilities	325	570
Net cash used in operating activities	(6,928)	(4,419)
Cash flows from investing activities:
Purchases of property, equipment and software	(1,754)	(6,069)
Capitalized internal-use software costs	(5,181)	(4,721)
Changes to restricted cash	1,861	563
Net cash used in investing activities	(5,074)	(10,227)
Cash flows from financing activities:
Proceeds from the issuance of common stock in initial public offering, net of underwriting discounts and commissions	0	69,518
Payments of costs related to initial public offering	0	(2,304)
Proceeds from debt	3,400	10,225
Repayment of debt	(8,500)	(27,500)
Proceeds from stock option exercises	106	684
Proceeds from issuance of common stock under employee stock purchase plan	202	0
Payments for repurchases of common stock	(125)	0
Payments of issuance costs related to debt	(54)	(57)
Net cash provided by (used in) financing activities	(4,971)	50,566
Effect of exchange rate changes on cash and cash equivalents	(48)	(5)
Net increase (decrease) in cash and cash equivalents	(17,021)	35,915
Cash and cash equivalents at beginning of period	41,143	12,949
Cash and cash equivalents at end of period	24,122	48,864
Supplemental disclosures of other cash flow information:
Cash paid for interest	805	1,245
Supplemental disclosures of non-cash investing and financing activities:
Purchases of property, equipment and software included in accounts payable and accruals	419	2,527
Additions to property, equipment and software from other long-term assets	213	0
Stock-based compensation capitalized in internal-use software costs	330	0
Issuance costs related to debt included in accounts payable and accruals	56	0
Vesting of restricted stock subject to repurchase	0	57
Issuance of lender warrants allocated to debt discount	0	335
Conversion of convertible preferred stock to common stock	0	25,476
Warrant derivative liability reclassified to additional paid-in capital	0	1,132
Liability-based option awards reclassified to additional paid-in capital	0	288
Deferred offering costs reclassified to additional paid-in capital	$ 0	$ 3,782

Description of Business

Description of Business	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Organization MaxPoint Interactive, Inc. (the "Company") was incorporated in September 2006 under the state laws of Delaware. The Company is a provider of a business intelligence and marketing automation solution. The Company’s customers are located in the United States and Europe and consist primarily of enterprises with national brands in the consumer products, retail, automotive, financial services, healthcare, telecommunications and entertainment industries. The Company’s MaxPoint Intelligence Platform predicts the most likely local buyers of a specific product at a particular retail location and then executes cross-channel digital marketing campaigns to reach these buyers on behalf of the Company’s customers. The Company is headquartered in Morrisville, North Carolina and has offices across the United States and one in the United Kingdom. Reverse Stock Split On April 25, 2016, the Company amended its amended and restated certificate of incorporation effecting a 1-for-4 reverse stock split of its outstanding shares of capital stock. The reverse stock split did not change the number of authorized shares of capital stock of the Company or cause an adjustment to the par value of the Company's capital stock. As a result of the reverse stock split, the Company was required to adjust the share amounts under its equity incentive plans and common stock warrant agreements with third parties. No fractional shares were issued in connection with the reverse stock split. Stockholders who would have otherwise held a fractional share of capital stock received a cash payment for any fractional share resulting from the split in an amount equal to such fraction multiplied by the closing sales price of the common stock as reported on the New York Stock Exchange on April 25, 2016, the last trading day immediately prior to the split. All disclosures of shares and per share data in the condensed consolidated financial statements and related notes have been adjusted to reflect the reverse stock split for all periods presented. Stock Exchange Listing Transfer On May 2, 2016, the Company provided written notice to the New York Stock Exchange of its intention to voluntarily delist its common stock on the New York Stock Exchange and to list its common stock on the Nasdaq Global Market ("Nasdaq"). The common stock was approved for listing on Nasdaq, with its continued trading under the symbol "MXPT." Trading of the Company’s common stock commenced on Nasdaq on May 13, 2016. Stock Repurchase Program On March 4, 2016 , the Company's board of directors authorized the repurchase of up to $4.0 million of the Company's outstanding shares of common stock. As part of the share repurchase program, shares may be purchased in open market transactions, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The stock repurchase program requires that the Company retire repurchased shares in accordance with Delaware corporate law and that such repurchased shares resume the status of authorized but unissued shares of common stock. The Company accounts for stock repurchases using the constructive retirement method wherein the aggregate par value of the stock is recorded to common stock and the excess of cost over par value is recorded to additional paid-in capital, subject to its pro rata portion. For the nine months ended September 30, 2016 , the Company repurchased 15,197 shares under this program at a weighted-average price per share of $8.19 . The Company did not repurchase any shares under this program during the three months ended September 30, 2016 . As of September 30, 2016 the Company had the ability to repurchase up to approximately $3.9 million of common stock under the program.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary and have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). All intercompany accounts and transactions have been eliminated in consolidation. Basis of Presentation The condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The Company believes that its existing cash balances, together with its current revolving line of credit, which was recently amended to, among other things, extend the maturity date to December 31, 2017 , will be sufficient to meet its anticipated cash requirements through at least the next 12 months. The Company has historically incurred losses and negative cash flows from operations and its line of credit requires the Company to comply with certain covenants, as described in Note 4. The Company’s liquidity needs will largely be determined by the success of its products already being marketed and innovations that it is currently working on, including: increasing the share of spending from its existing customers, acquiring new customers, and further penetrating new industries. If these efforts are not successful or the Company does not meet its operating plan or continue its compliance with its debt covenants, it will likely be necessary to do one or more of the following: (a) raise additional capital through equity or debt financings; (b) raise additional capital from other sources; or (c) reduce operating expenditures. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the condensed consolidated financial statements and accompanying notes. The Company evaluates its estimates, including those related to its allowance for doubtful accounts, revenue recognition, internal-use software, stock-based compensation, income taxes and related valuation allowances and the fair value of common stock warrants. The Company bases its estimates on its historical experience and on various other assumptions that it believes to be reasonable, the results of which form the basis for making judgments about the carrying value of assets and liabilities. Actual results could differ from those estimates. Unaudited Interim Condensed Consolidated Financial Information The condensed consolidated financial statements and footnotes have been prepared in accordance with GAAP as contained in the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") and applicable rules and regulations of the Securities and Exchange Commission’s ("SEC") Rule 10-01 of Regulation S-X for interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of financial position, the results of operations, comprehensive loss, changes in stockholders’ equity and cash flows. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results for the full year or the results for any future periods. The accompanying condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2015 ("Form 10-K"). The significant accounting policies and recent accounting pronouncements were described in Note 2 to the consolidated financial statements included in the Form 10-K. There have been no significant changes in or updates to the accounting policies since December 31, 2015. Restricted Cash Restricted cash represents cash that is subject to contractual withdrawal restrictions and penalties. Restricted cash is classified within the condensed consolidated balance sheets based on the timing of when the restrictions are expected to lapse. The Company presented restricted cash related to its debt agreement in the condensed consolidated balance sheets based on timing of maturity. On March 8, 2016, the Company amended its Amended New Loan and Security Agreement. The second amendment to the Amended New Loan and Security Agreement changed certain terms and conditions to the Amended New Loan and Security Agreement and Amended New Revolving Line of Credit. This amendment, among other things, removed the $5.0 million minimum cash and availability requirement (defined as cash held at the lender plus the unused credit line availability amount). As such, no amounts were reflected as restricted cash within the condensed consolidated balance sheets as of September 30, 2016 . The Company had recorded $1.9 million of restricted cash as of December 31, 2015 based on its availability under the Amended New Loan and Security Agreement of $3.1 million as of that date. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash, cash equivalents and accounts receivable. All of the Company’s cash and cash equivalents are held at financial institutions that management believes to be of high credit quality. The Company’s cash and cash equivalent accounts exceed federally insured limits. The Company has not experienced any losses on cash and cash equivalents to date. To manage accounts receivable risk, the Company evaluates and monitors the creditworthiness of its customers. As of December 31, 2015 and September 30, 2016 , the Company did not have any customers or advertising agencies that individually comprised a significant concentration of its accounts receivable. For the three and nine months ended September 30, 2015 and 2016 , the Company did not have any customers that individually comprised a significant concentration of its revenue. Allowance for Doubtful Accounts The Company extends credit to its customers without requiring collateral. Accounts receivable are stated at net realizable value. The Company utilizes the allowance method to provide for doubtful accounts based on management’s evaluation of the collectability of amounts due. The Company’s estimate is based on historical collection experience and the current status of accounts receivable. Historically, actual write-offs for uncollectible accounts have not significantly differed from the Company’s estimates. At December 31, 2015 and September 30, 2016 , the Company had reserved for $0.1 million and $0.3 million of its accounts receivable balance, respectively. The following table presents the changes in the allowance for doubtful accounts for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 2016 Allowance for doubtful accounts: Balance, beginning of period $ 159 $ 315 $ 179 $ 102 Add: adjustment for bad debts 177 (4 ) 177 324 Less: write-offs, net of recoveries (13 ) (1 ) (33 ) (116 ) Balance, end of period $ 323 $ 310 $ 323 $ 310 Internal-Use Software Development Costs The Company capitalizes certain costs associated with software developed for internal use, primarily consisting of direct labor costs associated with creating the software. Software development projects generally include three stages: the preliminary project stage (all costs are expensed as incurred); the application development stage (certain costs are capitalized and certain costs are expensed as incurred); and the post-implementation/operation stage (all costs are expensed as incurred). Costs capitalized in the application development stage primarily include costs of designing, coding and testing the software. Capitalization of costs requires judgment in determining when a project has reached the application development stage and the period over which the Company expects to benefit from the use of that software. Once the software is placed in service, these capitalized costs are amortized using the straight-line method over the estimated useful life of the software. Internal-use software development costs of $1.6 million and $1.7 million were capitalized during the three months ended September 30, 2015 and 2016 , respectively. Internal-use software development costs of $4.7 million and $5.5 million were capitalized during the nine months ended September 30, 2015 and 2016 , respectively. Capitalized internal-use software development costs are included in property, equipment and software, net in the condensed consolidated balance sheets. Amortization expense related to the capitalized internal-use software was $0.6 million and $1.3 million for the three months ended September 30, 2015 and 2016 , respectively, and $1.8 million and $3.5 million for the nine months ended September 30, 2015 and 2016 , respectively, and is primarily included in other cost of revenue and research and development expense in the condensed consolidated statements of operations. The net book value of capitalized internal-use software was $9.8 million and $11.7 million at December 31, 2015 and September 30, 2016 , respectively. Recently Adopted Accounting Pronouncements In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs . This accounting standards update is to simplify the presentation of debt issuance cost. This new guidance requires that debt issuance cost related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with the treatment of debt discounts. The accounting standards update does not affect the recognition and measurement guidance for debt issuance costs. In August 2015, the FASB issued ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements . This accounting standards update states that given the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line of credit arrangements, the SEC would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the debt issuance costs ratably over the term of the line of credit arrangement, regardless of whether there are any outstanding borrowings on the line of credit arrangement. The Company adopted ASU 2015-03, effective January 1, 2016, on a retrospective basis. The adoption of these pronouncements did not have a material impact on the Company's consolidated results of operations, financial position or cash flows. Recent Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . The new standard provides a single principles-based, five-step model to be applied to all contracts with customers, which steps are to (1) identify the contract(s) with the customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when each performance obligation is satisfied. More specifically, revenue will be recognized when promised goods or services are transferred to the customer in an amount that reflects the consideration expected in exchange for those goods or services. This guidance states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of ASU 2014-09 for all entities by one year. In March 2016, the FASB issued ASU 2016-08, which clarifies the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, which clarifies the implementation guidance on identifying performance obligations and licensing. In May 2016, the FASB issued ASU 2016-11, Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , which rescinds SEC paragraphs pursuant to SEC staff announcements. These rescissions include changes to topics pertaining to accounting for shipping and handling fees and costs and accounting for consideration given by a vendor to a customer. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients , which amends certain aspects of the new revenue recognition standard pursuant to ASU 2014-09. ASU 2014-09, as amended by ASU 2015-14, is effective for interim or annual periods beginning after December 15, 2017. Early adoption of the standard is permitted, but not before the original effective date. Companies can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The Company plans to adopt ASU 2014-09 as of January 1, 2018. The Company is currently in the process of evaluating the impact that the adoption of ASU 2014-09 will have on its consolidated results of operations, financial position and cash flows, and selecting the method of transition to the new standard. In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern . This guidance addresses management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Management’s evaluation should be based on relevant conditions and events that are known and reasonably knowable at the date that the financial statements are issued. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for interim periods within annual periods beginning after December 15, 2016. Although early adoption was permitted, the Company did not early adopt this standard. The Company is currently evaluating the impact the update will have on its consolidated financial statements and related disclosures. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes. This accounting standards update simplifies the presentation of deferred income taxes by eliminating the current requirement for an entity to separate deferred income tax liabilities and assets into current and noncurrent amounts in a classified statement of financial position. ASU 2015-17 requires an entity to classify deferred income tax liabilities and assets, as well as any related valuation allowance, as noncurrent within a classified balance sheet. This accounting standards update becomes effective for interim or annual periods beginning after December 15, 2016, and can be applied retrospectively or prospectively. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The purpose of this guidance is to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance supersedes previous accounting guidance under Topic 840. Under ASU 2016-02, a lessee will be required to recognize assets and liabilities for the rights and obligations created by leases for leases with lease terms of more than 12 months. Lessor accounting remains substantially similar to current GAAP. In addition, disclosures of leasing activities are to be expanded to include qualitative along with specific quantitative information. ASU 2016-02 is effective for interim or annual periods beginning after December 15, 2018 and early adoption is permitted. This standard requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The Company does not expect to early adopt this guidance and is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. ASU 2016-09 is effective for interim or annual periods beginning after December 15, 2016 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments . This new standard provides guidance related to eight specific cash flow issues, with the objective of reducing diversity in practice of how certain cash receipts and payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for interim or annual periods beginning after December 15, 2017 and early adoption is permitted. ASU 2016-15 must be applied retrospectively, unless it is impracticable to do so, in which case the amendments would be applied prospectively as of the earliest date practicable. The Company does not expect to early adopt this guidance and is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs when determining fair value. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, other current assets, accounts payable and accrued expenses and other current liabilities, approximate their respective fair values due to their short term nature. The Company's debt contains a variable rate of interest as of September 30, 2016 and therefore the carrying value of debt approximates its fair value. The fair value of debt falls within Level 3 of the fair value hierarchy as it is significantly driven by the creditworthiness of the Company, which is an unobservable input. The fair value of the money market fund measured using level 1 inputs in the fair value hierarchy reflected in cash and cash equivalents in the condensed consolidated balance sheets was $18.6 million as of December 31, 2015 . As of September 30, 2016 , the Company did not have a balance in this money market fund as all cash balances were maintained in demand deposit accounts.

Debt

Debt	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Debt	Debt On September 30, 2016, the Company entered into a third amendment to its Amended New Loan and Security Agreement (the "Third Amended New Loan and Security Agreement"). The Third Amended New Loan and Security Agreement changed the following terms and conditions to the Amended New Loan and Security Agreement and Amended New Revolving Line of Credit (the "Third Amended New Revolving Line of Credit") by: (1) extending the maturity date to December 31, 2017 ; (2) including in the revolving line of credit borrowing base calculation certain eligible unbilled accounts receivable; (3) adjusting the borrowing base calculation to be (a) 85% of eligible accounts receivable, plus (b) the lesser of (i) 75% of eligible unbilled accounts or (ii) $12,250,000 ; (4) modifying the definition of eligible accounts receivable for the revolving line of credit borrowing base by including up to 25% of certain eligible foreign accounts receivable, including those payable from Canada, Australia, France, Germany, Israel, Italy, Japan and the United Kingdom; (5) providing that all future cash collections from accounts receivable directly reduce the outstanding balance of the revolving credit facility; (6) fixing the applicable interest rate on future outstanding amounts under the revolving line of credit to a rate per annum equal to the prime referenced rate plus 0.5% ; (7) reducing certain financial covenants regarding the required monthly minimum adjusted quick ratio, as defined and described below, in addition to removing certain previous ratio thresholds which could have resulted in a range of applicable interest rates; and (8) changing the amounts related to the Company's financial covenants regarding specified quarterly adjusted EBITDA requirements, as defined and described below. The Third Amended New Revolving Line of Credit allows for potential maximum aggregate advances of $35.0 million . The amount available is: (a) the lesser of (i) the Third Amended New Revolving Line of Credit or (ii) the amount available under the borrowing base, as determined by lender; minus (b) the outstanding principal balance of any advances. All cash collections from accounts receivable directly reduce the outstanding balance of the revolving credit facility. As of September 30, 2016 , the Company had approximately $0.9 million of availability under the line of credit. The effective interest rate for the Third Amended New Revolving Line of Credit was 4.00% as of September 30, 2016 . The loan is secured by substantially all of the Company's assets. Under the terms of the Third Amended New Loan and Security Agreement, the Company is required to meet and maintain certain customary financial and nonfinancial covenants, one of which restricts the Company’s ability to pay any dividends or make any distribution or payment to redeem, retire or purchase any capital stock, subject to certain specified exceptions. The Company must also maintain with the lender all of its primary domestic operating and other deposit and investment accounts consisting of at least 95% of the Company’s total cash and cash equivalents. This agreement also includes customary subjective acceleration clauses; in addition, the Company is required to comply with certain financial covenants, including the following: Adjusted EBITDA . The Company is required to maintain specified quarterly Adjusted EBITDA, which is defined for this purpose, with respect to any trailing twelve-month period, as an amount equal to the sum of net income, plus (a) interest expense, plus (b) to the extent deducted in the calculation of net income, depreciation expense and amortization expense, plus (c) income tax expense, plus or minus (d) change in deferred revenue, less, (e) capitalized software development expenses, plus (f) any non-cash items such as stock-compensation expense (and other mutually agreed upon non-cash items), plus one-time non-recurring charges subject to the lenders approval. This covenant is tested on a quarterly basis. Adjusted Quick Ratio . The Company is required to maintain at all times a 1.0 monthly minimum Adjusted Quick Ratio, which is defined as the ratio of cash held at the lender and cash equivalents plus net accounts receivables to current liabilities (including all debt outstanding under the Third Amended New Revolving Line of Credit) minus the current portion of deferred revenue. This covenant is tested on a monthly basis. There were no modifications to any other significant terms with the Third Amended New Loan and Security Agreement. As of September 30, 2016 , the Company was in compliance with all financial and nonfinancial covenants.

Common Stock Reserved for Issua

Common Stock Reserved for Issuance	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock Reserved for Issuance	Common Stock Reserved for Issuance The Company’s shares of common stock reserved for issuance as of December 31, 2015 and September 30, 2016 were as follows: 2015 2016 Lender warrants to purchase common stock 50,000 50,000 Stock options outstanding 1,074,473 1,047,078 Unvested restricted stock units — 538,405 Possible future issuance under equity incentive plan 380,460 167,624 Possible future issuance under employee stock purchase plan 60,318 93,325 Total shares reserved 1,565,251 1,896,432

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Equity Incentive Plans Prior to the closing of the Company's initial public offering on March 11, 2015 ("IPO"), the Company had a stock-based compensation plan, the 2010 Equity Incentive Plan (the "2010 Plan") under which the Company granted options to purchase shares of common stock to employees, directors and consultants. In January 2015, the Company’s board of directors adopted the 2015 Equity Incentive Plan (the "2015 Plan"), which was subsequently ratified by its stockholders in February 2015. The 2015 Plan is the successor to and continuation of the 2010 Plan. No additional awards are to be granted under the 2010 Plan, but all stock awards granted under the 2010 Plan remain subject to their existing terms. The 2015 Plan provides for the grant of the following awards: (i) incentive and nonstatutory stock options; (ii) stock appreciation rights; (iii) restricted shares; (iv) stock units; and (v) performance cash awards. As of September 30, 2016 , 167,624 shares are available for future grants to employees, non-employee directors, consultants and advisors under the 2015 Plan. Stock Options The terms of the stock options, including the exercise price per share and vesting provisions, are determined by the board of directors. Historically, stock options were granted at exercise prices not less than the estimated fair market value of the Company’s common stock at the date of grant based upon numerous objective and subjective factors including: third-party valuations, preferred stock transactions with third-parties, current operating and financial performance, management estimates and future expectations. Subsequent to the completion of the IPO, the fair value of the Company's common stock on the grant date has been equal to the most recent closing price of the Company's stock on the New York Stock Exchange, or beginning May 13, 2016, on the Nasdaq. Stock option grants typically vest upon the expiration of an initial one year cliff and vest monthly thereafter over the remaining thirty-six months assuming continuing service, and expire ten years from the grant date. Stock-based compensation expense related to stock options is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 (1) 2016 Other cost of revenue $ 21 $ 20 $ 53 $ 58 Sales and marketing 184 182 526 549 Research and development 303 329 765 1,001 General and administrative 382 389 1,052 1,158 $ 890 $ 920 $ 2,396 $ 2,766 (1) Stock-based compensation expense included a favorable $0.2 million fair value adjustment related to stock option liability awards prior to reclassification to additional paid-in capital during the nine months ended September 30, 2015 . The Company accounts for stock options granted to employees based on their estimated fair values on the date of grant. The fair value of each stock option granted is estimated using the Black-Scholes option-pricing model, which requires the input of subjective assumptions, including the risk-free interest rate, expected life, expected stock price volatility and dividend yield. The risk-free interest rate assumption is based upon observed interest rates for constant maturity U.S. Treasury securities consistent with the expected term of the Company’s employee stock options. The expected life represents the period of time the stock options are expected to be outstanding and is based on the simplified method. The Company uses the simplified method due to the lack of sufficient historical exercise data to provide a reasonable basis upon which to otherwise estimate the expected life of the stock options. Expected volatility is based on historical volatilities for publicly traded stock of comparable companies over the estimated expected life of the stock options. The Company assumes no dividend yield, which is consistent with the Company’s history of not paying dividends. The stock-based compensation expense is recognized on a straight-line basis over the requisite service period, net of estimated forfeitures. The following table summarizes the assumptions used for estimating the fair value of stock options granted to employees for the three and nine months ended September 30 : Three Months Nine Months 2015 2016 2015 2016 Risk-free interest rate 1.57% - 1.76% 1.16% - 1.33% 1.57% - 1.87% 1.16% - 1.53% Expected term (years) 6.08 6.08 6.03 - 6.08 6.08 Expected volatility 58% - 59% 46% 53% - 59% 46% - 47% Dividend yield —% —% —% —% The following table summarizes the Company’s stock option activity for the nine months ended September 30, 2016 : Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding balance at January 1, 2016 1,074,473 $ 30.69 8.39 $ 500 Granted 115,360 8.55 Exercised (29,875 ) 3.54 Cancelled (112,880 ) 31.39 Outstanding balance at September 30, 2016 1,047,078 $ 28.95 7.86 $ 739 Exercisable at September 30, 2016 541,156 $ 30.27 7.07 $ 597 Vested and expected to vest at September 30, 2016 999,304 $ 29.36 7.81 $ 720 The weighted-average grant date fair value for the Company’s stock options granted was $10.80 and $4.25 per share during the three months ended September 30, 2015 and 2016 , respectively. The weighted-average grant date fair value for the Company’s stock options granted was $13.32 and $3.92 per share during the nine months ended September 30, 2015 and 2016 , respectively. The total compensation cost related to unvested stock options not yet recognized as of September 30, 2016 was $6.6 million and will be recognized over a weighted-average period of approximately 1.13 years . The aggregate intrinsic value of stock options exercised during the three and nine months ended September 30, 2015 was $0.1 million and $3.6 million , respectively. The aggregate intrinsic value of stock options exercised during the three and nine months ended September 30, 2016 was $0.1 million and $0.2 million , respectively. There was no associated income tax benefit recognized for the three and nine months ended September 30, 2015 and 2016 based on the Company’s valuation allowance that is recorded against its net deferred tax assets. Restricted Stock Units The terms of the restricted stock units ("RSUs"), including the vesting provisions, are determined by the board of directors. Each restricted stock unit represents the contingent right to receive one share of common stock of the Company. The RSUs granted typically vest over a two-year term upon the expiration of an initial six months cliff period and vest quarterly thereafter assuming continuing service. The Company accounts for RSUs granted to employees based on their estimated fair values on the date of grant. The fair value of RSUs is estimated based on the closing price of the underlying common stock on the date of grant. Stock-based compensation expense related to the RSUs is recognized on a straight-line basis over the requisite service period, net of estimated forfeitures. The Company initially granted RSUs during the three and nine months ended September 30, 2016. Stock-based compensation expense related to RSUs is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Ended Nine Months Ended Other cost of revenue $ 3 $ 3 Sales and marketing 10 10 Research and development 30 30 General and administrative 17 17 $ 60 $ 60 The following table summarizes the Company’s restricted stock unit activity for the nine months ended September 30, 2016: Number of Weighted- Nonvested balance at January 1, 2016 — $ — Granted 540,420 8.87 Vested — — Forfeited (2,015 ) 8.87 Nonvested balance at September 30, 2016 538,405 $ 8.87 The total compensation cost related to nonvested RSUs not yet recognized as of September 30, 2016 was $4.7 million and will be recognized over a weighted-average period of approximately 1.13 years . Employee Stock Purchase Plan In January 2015, the Company’s board of directors adopted the 2015 Employee Stock Purchase Plan (the "2015 ESPP"), which was subsequently ratified by its stockholders in February 2015. The 2015 ESPP allows eligible employees to purchase shares of common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to limitations set forth in the 2015 ESPP. Unless otherwise determined by the compensation committee, two offering periods of six months’ duration will begin each year on May 1 and November 1. Due to the timing of the Company's IPO, the first offering period started on March 5, 2015 and ended on October 30, 2015. At the end of each offering period, employees are able to purchase shares at the lower of 85% of the fair market value of the common stock on the first day of an offering period or on the purchase date. The Company has accumulated employee withholdings of $0.4 million as of September 30, 2016 associated with the next purchase date. Stock-based compensation expense related to the 2015 ESPP is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 2016 Other cost of revenue $ 9 $ — $ 15 $ 4 Sales and marketing 51 10 130 51 Research and development 80 19 165 105 General and administrative 20 5 50 22 $ 160 $ 34 $ 360 $ 182 The Company accounts for shares to be issued under its employee stock purchase plan based on the fair value of the shares determined using the Black-Scholes option pricing model on the first day of the offering period. The fair value of the "look back" option for 2015 ESPP shares issued during the offering period is estimated using: (1) a 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. Stock-based compensation expense related to the employee stock purchase plan is recognized on a straight-line basis over the offering period, net of estimated forfeitures. The following table summarizes the assumptions used in the Black-Scholes option pricing model for estimating the fair value of employee stock purchase rights under the 2015 ESPP for the three and nine months ended September 30 , 2016: Three Months Nine Months 2015 2016 2015 2016 Risk-free interest rate 0.10% 0.41% 0.10% 0.27% - 0.41% Expected term (years) 0.59 0.50 0.59 0.50 Expected volatility 61% 43% 61% 43% - 55% Dividend yield —% —% —% —% As of September 30, 2016 , the total unrecognized stock-based compensation cost related to the 2015 ESPP was $0.01 million and will be recognized over a period of approximately 0.1 years.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation The Company is subject to various legal matters and claims in the ordinary course of business. Although the results of legal proceedings and claims cannot be predicted with certainty, including the matters noted below, in the opinion of management, there are currently no such known matters that will have a material effect on the financial condition, results of operations or cash flows of the Company. The Company, certain of its officers and directors, and certain investment banking firms who acted as underwriters in connection with the Company’s IPO, have been named as defendants in a putative class action lawsuit filed August 31, 2015 in the United States District Court for the Southern District of New York. The complaint alleges that the defendants violated Sections 11, 12 and 15 of the Securities Act by not including information regarding customer concentration, which the complaint characterizes as a known trend and/or significant factor required to be disclosed under federal securities regulations. The complaint seeks unspecified damages, interest and other costs. The Court appointed a Lead Plaintiff on November 18, 2015, and on January 19, 2016 the Lead Plaintiff filed a First Amended Complaint that repeats the same substantive allegations included in the initial complaint and continues to seek unspecified damages. On March 24, 2016, the Company filed a motion to dismiss the First Amended Complaint. The Lead Plaintiff filed an opposition to that motion on May 9, 2016, and the Company filed a reply brief on June 8, 2016. A hearing date for the Company’s motion to dismiss has not yet been set, however, the Court may rule on the motion without hearing oral arguments. The Company disputes these claims and is defending this matter vigorously, and is unable to estimate the amount of a potential loss or range of potential loss, if any. Legal fees are expensed in the period in which they are incurred. Purchase Commitments The Company has $3.3 million of non-cancelable contractual commitments as of September 30, 2016 , primarily related to purchases of data, third-party data centers and other support services. Of these commitments, $3.0 million and $0.3 million are due within the next year and within the next two years, respectively. Indemnification Agreements In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees. Under certain circumstances, the Company’s indemnification obligations may include the cost of advancing legal expenses and indemnifying its officers, directors and underwriters for costs arising out of the litigation described above under "Commitments and Contingencies — Litigation," to the extent such costs are not covered by the Company’s directors’ and officers’ liability insurance. There are no claims that the Company is aware of that could have a material effect on the Company’s financial position, results of operations or cash flows.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The Company calculates net loss per basic share by dividing net loss by the weighted-average number of shares outstanding during the reporting period. The Company calculates net loss per diluted share by dividing net loss by the weighted-average number of shares outstanding during the reporting period plus the effects of any dilutive common stock-based instruments. Due to the net losses for the three and nine months ended September 30, 2015 and 2016 , basic and diluted loss per share were the same, as the effect of potentially dilutive securities would have been anti-dilutive. The following securities have been excluded from the calculation of weighted-average common shares outstanding because the effect is anti-dilutive for the three and nine months ended September 30 : Three Months Nine Months 2015 2016 2015 2016 Lender warrants to purchase common stock 50,000 50,000 50,000 50,000 2015 ESPP 43,433 32,029 43,433 32,029 Restricted stock units — 538,405 — 538,405 Stock options 1,052,425 1,047,078 1,052,425 1,047,078

Related Party

Related Party	9 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party	Related Party On August 15, 2015, the Company entered into an advisor agreement with Kevin Dulsky, a non-employee board member. Mr. Dulsky agreed to consult with and advise the Company from time to time, at the Company’s request, on business development and strategic planning matters. Mr. Dulsky was paid an hourly fee for his services provided, in addition to reimbursement for reasonable expenses. The agreement allowed Mr. Dulsky or the Company to terminate the advisor relationship at any time by giving the other party fifteen days’ notice. As of December 31, 2015, this advisor agreement had been terminated. For the three and nine months ended September 30, 2015, the Company incurred $0.02 million of expense related to this agreement that is classified in general and administrative expenses within the condensed consolidated statement of operations. As of December 31, 2015, there were no amounts due to Mr. Dulsky under this agreement.

Summary of Significant Accoun17

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary and have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). All intercompany accounts and transactions have been eliminated in consolidation.
Basis of Presentation and Unaudited Interim Condensed Consolidated Financial Information	Unaudited Interim Condensed Consolidated Financial Information The condensed consolidated financial statements and footnotes have been prepared in accordance with GAAP as contained in the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") and applicable rules and regulations of the Securities and Exchange Commission’s ("SEC") Rule 10-01 of Regulation S-X for interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of financial position, the results of operations, comprehensive loss, changes in stockholders’ equity and cash flows. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results for the full year or the results for any future periods. The accompanying condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2015 ("Form 10-K"). The significant accounting policies and recent accounting pronouncements were described in Note 2 to the consolidated financial statements included in the Form 10-K. There have been no significant changes in or updates to the accounting policies since December 31, 2015 Basis of Presentation The condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The Company believes that its existing cash balances, together with its current revolving line of credit, which was recently amended to, among other things, extend the maturity date to December 31, 2017 , will be sufficient to meet its anticipated cash requirements through at least the next 12 months.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the condensed consolidated financial statements and accompanying notes. The Company evaluates its estimates, including those related to its allowance for doubtful accounts, revenue recognition, internal-use software, stock-based compensation, income taxes and related valuation allowances and the fair value of common stock warrants. The Company bases its estimates on its historical experience and on various other assumptions that it believes to be reasonable, the results of which form the basis for making judgments about the carrying value of assets and liabilities. Actual results could differ from those estimates.
Restricted Cash	Restricted Cash Restricted cash represents cash that is subject to contractual withdrawal restrictions and penalties. Restricted cash is classified within the condensed consolidated balance sheets based on the timing of when the restrictions are expected to lapse. The Company presented restricted cash related to its debt agreement in the condensed consolidated balance sheets based on timing of maturity.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash, cash equivalents and accounts receivable. All of the Company’s cash and cash equivalents are held at financial institutions that management believes to be of high credit quality. The Company’s cash and cash equivalent accounts exceed federally insured limits. The Company has not experienced any losses on cash and cash equivalents to date. To manage accounts receivable risk, the Company evaluates and monitors the creditworthiness of its customers.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The Company extends credit to its customers without requiring collateral. Accounts receivable are stated at net realizable value. The Company utilizes the allowance method to provide for doubtful accounts based on management’s evaluation of the collectability of amounts due. The Company’s estimate is based on historical collection experience and the current status of accounts receivable. Historically, actual write-offs for uncollectible accounts have not significantly differed from the Company’s estimates.
Internal-Use Software Development Costs	Internal-Use Software Development Costs The Company capitalizes certain costs associated with software developed for internal use, primarily consisting of direct labor costs associated with creating the software. Software development projects generally include three stages: the preliminary project stage (all costs are expensed as incurred); the application development stage (certain costs are capitalized and certain costs are expensed as incurred); and the post-implementation/operation stage (all costs are expensed as incurred). Costs capitalized in the application development stage primarily include costs of designing, coding and testing the software. Capitalization of costs requires judgment in determining when a project has reached the application development stage and the period over which the Company expects to benefit from the use of that software. Once the software is placed in service, these capitalized costs are amortized using the straight-line method over the estimated useful life of the software.
Recently Adopted Accounting Pronouncements and Recent Accounting Pronouncements Not Yet Adopted	Recently Adopted Accounting Pronouncements In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs . This accounting standards update is to simplify the presentation of debt issuance cost. This new guidance requires that debt issuance cost related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with the treatment of debt discounts. The accounting standards update does not affect the recognition and measurement guidance for debt issuance costs. In August 2015, the FASB issued ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements . This accounting standards update states that given the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line of credit arrangements, the SEC would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the debt issuance costs ratably over the term of the line of credit arrangement, regardless of whether there are any outstanding borrowings on the line of credit arrangement. The Company adopted ASU 2015-03, effective January 1, 2016, on a retrospective basis. The adoption of these pronouncements did not have a material impact on the Company's consolidated results of operations, financial position or cash flows. Recent Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . The new standard provides a single principles-based, five-step model to be applied to all contracts with customers, which steps are to (1) identify the contract(s) with the customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when each performance obligation is satisfied. More specifically, revenue will be recognized when promised goods or services are transferred to the customer in an amount that reflects the consideration expected in exchange for those goods or services. This guidance states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of ASU 2014-09 for all entities by one year. In March 2016, the FASB issued ASU 2016-08, which clarifies the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, which clarifies the implementation guidance on identifying performance obligations and licensing. In May 2016, the FASB issued ASU 2016-11, Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , which rescinds SEC paragraphs pursuant to SEC staff announcements. These rescissions include changes to topics pertaining to accounting for shipping and handling fees and costs and accounting for consideration given by a vendor to a customer. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients , which amends certain aspects of the new revenue recognition standard pursuant to ASU 2014-09. ASU 2014-09, as amended by ASU 2015-14, is effective for interim or annual periods beginning after December 15, 2017. Early adoption of the standard is permitted, but not before the original effective date. Companies can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The Company plans to adopt ASU 2014-09 as of January 1, 2018. The Company is currently in the process of evaluating the impact that the adoption of ASU 2014-09 will have on its consolidated results of operations, financial position and cash flows, and selecting the method of transition to the new standard. In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern . This guidance addresses management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Management’s evaluation should be based on relevant conditions and events that are known and reasonably knowable at the date that the financial statements are issued. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for interim periods within annual periods beginning after December 15, 2016. Although early adoption was permitted, the Company did not early adopt this standard. The Company is currently evaluating the impact the update will have on its consolidated financial statements and related disclosures. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes. This accounting standards update simplifies the presentation of deferred income taxes by eliminating the current requirement for an entity to separate deferred income tax liabilities and assets into current and noncurrent amounts in a classified statement of financial position. ASU 2015-17 requires an entity to classify deferred income tax liabilities and assets, as well as any related valuation allowance, as noncurrent within a classified balance sheet. This accounting standards update becomes effective for interim or annual periods beginning after December 15, 2016, and can be applied retrospectively or prospectively. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The purpose of this guidance is to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance supersedes previous accounting guidance under Topic 840. Under ASU 2016-02, a lessee will be required to recognize assets and liabilities for the rights and obligations created by leases for leases with lease terms of more than 12 months. Lessor accounting remains substantially similar to current GAAP. In addition, disclosures of leasing activities are to be expanded to include qualitative along with specific quantitative information. ASU 2016-02 is effective for interim or annual periods beginning after December 15, 2018 and early adoption is permitted. This standard requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The Company does not expect to early adopt this guidance and is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. ASU 2016-09 is effective for interim or annual periods beginning after December 15, 2016 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments . This new standard provides guidance related to eight specific cash flow issues, with the objective of reducing diversity in practice of how certain cash receipts and payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for interim or annual periods beginning after December 15, 2017 and early adoption is permitted. ASU 2016-15 must be applied retrospectively, unless it is impracticable to do so, in which case the amendments would be applied prospectively as of the earliest date practicable. The Company does not expect to early adopt this guidance and is currently evaluating the impact of the adoption of this guidance on its consolidated results of operations, financial position and cash flows.
Fair Value Measurements	The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs when determining fair value. The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, other current assets, accounts payable and accrued expenses and other current liabilities, approximate their respective fair values due to their short term nature. The Company's debt contains a variable rate of interest as of September 30, 2016 and therefore the carrying value of debt approximates its fair value. The fair value of debt falls within Level 3 of the fair value hierarchy as it is significantly driven by the creditworthiness of the Company, which is an unobservable input.
Stock-Based Compensation	The Company accounts for RSUs granted to employees based on their estimated fair values on the date of grant. The fair value of RSUs is estimated based on the closing price of the underlying common stock on the date of grant. Stock-based compensation expense related to the RSUs is recognized on a straight-line basis over the requisite service period, net of estimated forfeitures. The Company accounts for stock options granted to employees based on their estimated fair values on the date of grant. The fair value of each stock option granted is estimated using the Black-Scholes option-pricing model, which requires the input of subjective assumptions, including the risk-free interest rate, expected life, expected stock price volatility and dividend yield. The risk-free interest rate assumption is based upon observed interest rates for constant maturity U.S. Treasury securities consistent with the expected term of the Company’s employee stock options. The expected life represents the period of time the stock options are expected to be outstanding and is based on the simplified method. The Company uses the simplified method due to the lack of sufficient historical exercise data to provide a reasonable basis upon which to otherwise estimate the expected life of the stock options. Expected volatility is based on historical volatilities for publicly traded stock of comparable companies over the estimated expected life of the stock options. The Company assumes no dividend yield, which is consistent with the Company’s history of not paying dividends. The stock-based compensation expense is recognized on a straight-line basis over the requisite service period, net of estimated forfeitures. The Company accounts for shares to be issued under its employee stock purchase plan based on the fair value of the shares determined using the Black-Scholes option pricing model on the first day of the offering period. The fair value of the "look back" option for 2015 ESPP shares issued during the offering period is estimated using: (1) a 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. Stock-based compensation expense related to the employee stock purchase plan is recognized on a straight-line basis over the offering period, net of estimated forfeitures.
Earnings Per Share	The Company calculates net loss per basic share by dividing net loss by the weighted-average number of shares outstanding during the reporting period. The Company calculates net loss per diluted share by dividing net loss by the weighted-average number of shares outstanding during the reporting period plus the effects of any dilutive common stock-based instruments.

Summary of Significant Accoun18

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Schedule of changes in the allowance for doubtful accounts	The following table presents the changes in the allowance for doubtful accounts for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 2016 Allowance for doubtful accounts: Balance, beginning of period $ 159 $ 315 $ 179 $ 102 Add: adjustment for bad debts 177 (4 ) 177 324 Less: write-offs, net of recoveries (13 ) (1 ) (33 ) (116 ) Balance, end of period $ 323 $ 310 $ 323 $ 310

Common Stock Reserved for Iss19

Common Stock Reserved for Issuance (Tables)	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract]
Schedule of common stock reserved for issuance	The Company’s shares of common stock reserved for issuance as of December 31, 2015 and September 30, 2016 were as follows: 2015 2016 Lender warrants to purchase common stock 50,000 50,000 Stock options outstanding 1,074,473 1,047,078 Unvested restricted stock units — 538,405 Possible future issuance under equity incentive plan 380,460 167,624 Possible future issuance under employee stock purchase plan 60,318 93,325 Total shares reserved 1,565,251 1,896,432

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of stock-based compensation expense	Stock-based compensation expense related to RSUs is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Ended Nine Months Ended Other cost of revenue $ 3 $ 3 Sales and marketing 10 10 Research and development 30 30 General and administrative 17 17 $ 60 $ 60 Stock-based compensation expense related to the 2015 ESPP is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 2016 Other cost of revenue $ 9 $ — $ 15 $ 4 Sales and marketing 51 10 130 51 Research and development 80 19 165 105 General and administrative 20 5 50 22 $ 160 $ 34 $ 360 $ 182 Stock-based compensation expense related to stock options is included in the following line items in the condensed consolidated statements of operations for the three and nine months ended September 30 (in thousands): Three Months Nine Months 2015 2016 2015 (1) 2016 Other cost of revenue $ 21 $ 20 $ 53 $ 58 Sales and marketing 184 182 526 549 Research and development 303 329 765 1,001 General and administrative 382 389 1,052 1,158 $ 890 $ 920 $ 2,396 $ 2,766 (1) Stock-based compensation expense included a favorable $0.2 million fair value adjustment related to stock option liability awards prior to reclassification to additional paid-in capital during the nine months ended September 30, 2015 .
Summary of the assumptions used for estimating the fair value of stock options granted to employees	The following table summarizes the assumptions used for estimating the fair value of stock options granted to employees for the three and nine months ended September 30 : Three Months Nine Months 2015 2016 2015 2016 Risk-free interest rate 1.57% - 1.76% 1.16% - 1.33% 1.57% - 1.87% 1.16% - 1.53% Expected term (years) 6.08 6.08 6.03 - 6.08 6.08 Expected volatility 58% - 59% 46% 53% - 59% 46% - 47% Dividend yield —% —% —% —%
Summary of stock option activity	The following table summarizes the Company’s stock option activity for the nine months ended September 30, 2016 : Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding balance at January 1, 2016 1,074,473 $ 30.69 8.39 $ 500 Granted 115,360 8.55 Exercised (29,875 ) 3.54 Cancelled (112,880 ) 31.39 Outstanding balance at September 30, 2016 1,047,078 $ 28.95 7.86 $ 739 Exercisable at September 30, 2016 541,156 $ 30.27 7.07 $ 597 Vested and expected to vest at September 30, 2016 999,304 $ 29.36 7.81 $ 720
Summary of the assumptions used for estimating the fair value of shares to be granted under the 2015 ESPP	The following table summarizes the assumptions used in the Black-Scholes option pricing model for estimating the fair value of employee stock purchase rights under the 2015 ESPP for the three and nine months ended September 30 , 2016: Three Months Nine Months 2015 2016 2015 2016 Risk-free interest rate 0.10% 0.41% 0.10% 0.27% - 0.41% Expected term (years) 0.59 0.50 0.59 0.50 Expected volatility 61% 43% 61% 43% - 55% Dividend yield —% —% —% —%
Summary of restricted stock unit activity	The following table summarizes the Company’s restricted stock unit activity for the nine months ended September 30, 2016: Number of Weighted- Nonvested balance at January 1, 2016 — $ — Granted 540,420 8.87 Vested — — Forfeited (2,015 ) 8.87 Nonvested balance at September 30, 2016 538,405 $ 8.87

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Summary of anti-dilutive securities which are excluded from the calculation of weighted average common shares outstanding	The following securities have been excluded from the calculation of weighted-average common shares outstanding because the effect is anti-dilutive for the three and nine months ended September 30 : Three Months Nine Months 2015 2016 2015 2016 Lender warrants to purchase common stock 50,000 50,000 50,000 50,000 2015 ESPP 43,433 32,029 43,433 32,029 Restricted stock units — 538,405 — 538,405 Stock options 1,052,425 1,047,078 1,052,425 1,047,078

Description of Business - Organ

Description of Business - Organization (Details)	Sep. 30, 2016office
United Kingdom
Entity Location [Line Items]
Number of offices	1

Description of Business - Rever

Description of Business - Reverse Stock Split (Details)	Apr. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Stock split conversion ratio	0.25

Description of Business - Stock

Description of Business - Stock Repurchase Program (Details) - Common Stock - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016	Mar. 04, 2016
Equity, Class of Treasury Stock [Line Items]
Amount of stock repurchase program authorized (up to)		$ 4
Number of shares repurchased (in shares)	15,197
Weighted average price per share of shares repurchased (in usd per share)	$ 8.19
Amount available for common stock repurchases under the program	$ 3.9

Summary of Significant Accoun25

Summary of Significant Accounting Policies - Restricted Cash (Details) - USD ($)	Sep. 30, 2016	Mar. 07, 2016	Dec. 31, 2015
Compensating Balances [Line Items]
Restricted cash, short-term	$ 0		$ 1,861,000
Amended New Loan and Security Agreement
Compensating Balances [Line Items]
Restricted cash, short-term			1,900,000
Available borrowing capacity	$ 900,000		$ 3,100,000
Amended New Loan and Security Agreement | Minimum
Compensating Balances [Line Items]
Minimum amount required to be maintained by the company at all times		$ 5,000,000

Summary of Significant Accoun26

Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Allowance for doubtful accounts:
Balance, beginning of period	$ 315	$ 159	$ 102	$ 179
Add: adjustment for bad debts	(4)	177	324	177
Less: write-offs, net of recoveries	(1)	(13)	(116)	(33)
Balance, end of period	$ 310	$ 323	$ 310	$ 323

Summary of Significant Accoun27

Summary of Significant Accounting Policies - Internal-Use Software Development Costs (Details) - Capitalized internal-use software costs - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Internal-Use Software Development Costs
Capitalized development costs	$ 1.7	$ 1.6	$ 5.5	$ 4.7
Amortization expense	1.3	$ 0.6	3.5	$ 1.8
Net book value	$ 11.7		$ 11.7		$ 9.8

Fair Value Measurements (Detail

Fair Value Measurements (Details) $ in Millions	Dec. 31, 2015USD ($)
Level 1 | Money Market Fund
Assets:
Cash and cash equivalents - Money Market Fund	$ 18.6

Debt - Agreement Terms (Details

Debt - Agreement Terms (Details) - Amended New Loan and Security Agreement	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Debt
Percentage of eligible accounts receivable used in calculation of amount available under the borrowing base	85.00%	85.00%
Percentage of eligible unbilled accounts receivable used in calculation of amount available under the borrowing base	75.00%	75.00%
Maximum borrowing capacity related to eligible unbilled accounts receivable	$ 12,250,000	$ 12,250,000
Maximum percentage of eligible foreign accounts receivable considered as eligible accounts receivable	25.00%	25.00%
Maximum borrowing capacity	$ 35,000,000	$ 35,000,000
Available borrowing capacity	$ 900,000	$ 900,000	$ 3,100,000
Effective interest rate	4.00%	4.00%
Minimum percentage of the Company’s total cash and cash equivalents balance required to be maintained with lender		95.00%
Revolving Line of Credit | Prime
Debt
Potential interest rate margin (as a percent)	0.50%
Minimum | Revolving Line of Credit
Debt
Debt covenant, required minimum adjusted quick ratio	1

Common Stock Reserved for Futur

Common Stock Reserved for Future Issuance (Details) - shares	Sep. 30, 2016	Dec. 31, 2015
Common Stock Reserved for Issuance
Total shares reserved	1,896,432	1,565,251
2015 Employee Stock Purchase Plan
Common Stock Reserved for Issuance
Total shares reserved	93,325	60,318
Equity Incentive Plans
Common Stock Reserved for Issuance
Total shares reserved	167,624	380,460
Stock Options
Common Stock Reserved for Issuance
Total shares reserved	1,047,078	1,074,473
Unvested restricted stock units
Common Stock Reserved for Issuance
Total shares reserved	538,405	0
Lender warrants to purchase common stock
Common Stock Reserved for Issuance
Total shares reserved	50,000	50,000

Stock-Based Compensation - Equi

Stock-Based Compensation - Equity Incentive Plan Terms (Details)	9 Months Ended
	Sep. 30, 2016shares
Equity Incentive Plans | Stock options
Award terms
Term of grant (in years)	10 years
Equity Incentive Plans | Initial Cliff Period | Stock options
Award terms
Vesting period	1 year
Equity Incentive Plans | Remaining Vesting Period | Stock options
Award terms
Vesting period	36 months
2015 Equity Incentive Plan
Stock-Based compensation
Shares available for future grants	167,624
2015 Equity Incentive Plan | Restricted stock units
Award terms
Vesting period	2 years
2015 Equity Incentive Plan | Initial Cliff Period | Restricted stock units
Award terms
Vesting period	6 months

Stock-Based Compensation - Allo

Stock-Based Compensation - Allocation of Stock-Based Compensation Expense, Stock Options (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Equity Incentive Plans
Share-based compensation expense by statement of operations line item
Change in fair value included in total share based compensation				$ (200)
Stock options
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 920	$ 890	$ 2,766	2,396
Stock options | Other cost of revenue
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	20	21	58	53
Stock options | Sales and marketing
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	182	184	549	526
Stock options | Research and development
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	329	303	1,001	765
Stock options | General and administrative
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 389	$ 382	$ 1,158	$ 1,052

Stock-Based Compensation - Fair

Stock-Based Compensation - Fair Value Assumptions, Stock Options (Details) - Employee Stock Options	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value Assumptions using Black-Scholes option pricing model
Risk free interest rate, minimum	1.16%	1.57%	1.16%	1.57%
Risk free interest rate, maximum	1.33%	1.76%	1.53%	1.87%
Expected term (years)	6 years 29 days	6 years 29 days	6 years 29 days
Expected volatility, minimum		58.00%	46.00%	53.00%
Expected volatility, maximum		59.00%	47.00%	59.00%
Expected volatility	46.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum
Fair Value Assumptions using Black-Scholes option pricing model
Expected term (years)				6 years 11 days
Maximum
Fair Value Assumptions using Black-Scholes option pricing model
Expected term (years)				6 years 29 days

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Number of Options
Outstanding balance at beginning of period (in shares)	1,074,473
Granted (in shares)	115,360
Exercised (in shares)	(29,875)
Cancelled (in shares)	(112,880)
Outstanding balance at end of period (in shares)	1,047,078	1,074,473
Exercisable at end of period (in shares)	541,156
Vested and expected to vest at end of period (in shares)	999,304
Weighted Average Exercise Price
Outstanding balance at beginning of period (in usd per share)	$ 30.69
Granted (in usd per share)	8.55
Exercised (in usd per share)	3.54
Cancelled (in usd per share)	31.39
Outstanding balance at end of period (in usd per share)	28.95	$ 30.69
Exercisable at end of period (in usd per share)	30.27
Vested and expected to vest at end of period (in usd per share)	$ 29.36
Weighted Average Remaining Contractual Term
Outstanding balance at end of period (in years)	7 years 10 months 10 days	8 years 4 months 21 days
Exercisable at end of period (in years)	7 years 26 days
Vested and expected to vest at end of period (in years)	7 years 9 months 22 days
Aggregate Intrinsic Value
Outstanding balance at end of period	$ 739	$ 500
Exercisable at end of period	597
Vested and expected to vest at end of period	$ 720

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Disclosures, Stock Options (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Stock-Based compensation
Weighted-average grant date fair value (in usd per share)	$ 4.25	$ 10.80	$ 3.92	$ 13.32
Unrecognized compensation cost related to nonvested share-based compensation arrangements	$ 6.6		$ 6.6
Intrinsic value of options exercised	$ 0.1	$ 0.1	$ 0.2	$ 3.6
Stock options
Stock-Based compensation
Expected weighted-average period for recognition of unrecognized stock-based compensation costs (in years)			1 year 1 month 17 days

Stock-Based Compensation - Al36

Stock-Based Compensation - Allocation of Stock-Based Compensation Expense, RSUs (Details) - Restricted stock units $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 60	$ 60
Unrecognized compensation cost related to nonvested share-based compensation arrangements	4,700	$ 4,700
Expected weighted-average period for recognition of unrecognized stock-based compensation costs (in years)		1 year 1 month 17 days
Other cost of revenue
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	3	$ 3
Sales and marketing
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	10	10
Research and development
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	30	30
General and administrative
Share-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 17	$ 17

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Unit Activity (Details) - Restricted stock units	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Number of Shares
Nonvested balance at beginning of period (in shares) | shares	0
Granted (in shares) | shares	540,420
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(2,015)
Nonvested balance at end of period (in shares) | shares	538,405
Weighted Average Grant Date Fair Value
Nonvested balance at beginning of period (in usd per share) | $ / shares	$ 0
Granted (in usd per share) | $ / shares	8.87
Vested (in usd per share) | $ / shares	0
Forfeited (in usd per share) | $ / shares	8.87
Nonvested balance at end of period (in usd per share) | $ / shares	$ 8.87

Stock-Based Compensation - Empl

Stock-Based Compensation - Employee Stock Purchase Plan (Details) - 2015 Employee Stock Purchase Plan $ in Millions	1 Months Ended	9 Months Ended
	Jan. 31, 2015offering_period	Sep. 30, 2016USD ($)
Stock-Based compensation
Maximum percentage of eligible compensation per employee to purchase shares of common stock	15.00%
Number of offering periods under terms of plan | offering_period	2
Offering periods beginning on May 1 and November 1	6 months
Employee purchase price, percentage of fair market value of common stock	85.00%
Accumulated employee withholdings | $		$ 0.4
Discount on purchase of stock (as a percent)		15.00%
Call Option
Stock-Based compensation
Fair value of option (as a percent)		85.00%
Put Option
Stock-Based compensation
Fair value of option (as a percent)		15.00%

Stock-Based Compensation - Al39

Stock-Based Compensation - Allocation of Stock-Based Compensation Expense, ESPP (Details) - 2015 Employee Stock Purchase Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
ESPP stock-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 34	$ 160	$ 182	$ 360
Unrecognized compensation cost related to nonvested share-based compensation arrangements	10		$ 10
Expected weighted-average period for recognition of unrecognized stock-based compensation costs (in years)			1 month 6 days
Other cost of revenue
ESPP stock-based compensation expense by statement of operations line item
Stock-based compensation expense	0	9	$ 4	15
Sales and marketing
ESPP stock-based compensation expense by statement of operations line item
Stock-based compensation expense	10	51	51	130
Research and development
ESPP stock-based compensation expense by statement of operations line item
Stock-based compensation expense	19	80	105	165
General and administrative
ESPP stock-based compensation expense by statement of operations line item
Stock-based compensation expense	$ 5	$ 20	$ 22	$ 50

Stock-Based Compensation - Fa40

Stock-Based Compensation - Fair Value Assumptions, ESPP (Details) - 2015 Employee Stock Purchase Plan	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Stock-Based compensation
Risk-free interest rate	0.41%	0.10%		0.10%
Risk free interest rate, minimum			0.27%
Risk free interest rate, maximum			0.41%
Expected term (years)	6 months	7 months 2 days	6 months	7 months 2 days
Expected volatility	43.00%	61.00%		61.00%
Expected volatility, minimum			43.00%
Expected volatility, maximum			55.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Total contractual commitments	$ 3.3
Commitments due within next year	3
Commitments due within one to two years	$ 0.3

Earnings Per Share (Details)

Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Lender warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of weighted average common shares outstanding	50,000	50,000	50,000	50,000
2015 ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of weighted average common shares outstanding	32,029	43,433	32,029	43,433
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of weighted average common shares outstanding	538,405	0	538,405	0
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of weighted average common shares outstanding	1,047,078	1,052,425	1,047,078	1,052,425

Related Party (Details)

Related Party (Details) - Kevin Dulsky - USD ($)	Aug. 15, 2015	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2015
Related party transactions
Termination of agreement, notice period	15 days
Accounts payable related to advisor agreement				$ 0
General and administrative
Related party transactions
Expense incurred related to advisor agreement		$ 20,000	$ 20,000