Imprivata 10-Q 2 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 26, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Trading Symbol	IMPR
Entity Registrant Name	Imprivata Inc
Entity Central Index Key	1,328,015
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,573,159

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 46,996	$ 51,712
Accounts receivable, net of allowances	33,429	36,629
Prepaid expenses and other current assets	4,549	4,431
Total current assets	84,974	92,772
Property and equipment, net	8,154	7,901
Goodwill	11,885	14,380
Intangible assets, net	6,862	5,681
Other assets	1,022	23
Total assets	112,897	120,757
Current liabilities:
Accounts payable	7,728	6,997
Accrued expenses and other current liabilities	11,152	11,567
Current portion of capital lease obligations and long-term debt	320	442
Current portion of other long-term liabilities	303	240
Current portion of deferred revenue	44,832	43,929
Current portion of contingent purchase price liability	458	818
Total current liabilities	64,793	63,993
Deferred revenue, net of current portion	4,747	5,430
Deferred tax liability	907	662
Capital lease obligations, long-term debt and royalty obligations, net of current portion	62	209
Other long-term liabilities, net of current portion	2,059	1,850
Total liabilities	72,568	72,144
Commitments and contingencies (Note 11)
Stockholders' equity:
Undesignated preferred stock, $0.001 par value, 20,000,000 shares authorized; none issued at June 30, 2016 and December 31, 2015
Common stock, $0.001 par value, 250,000,000 shares authorized at June 30, 2016 and December 31, 2015; 25,365,572 and 25,041,643 shares were issued and outstanding at June 30, 2016 and December 31, 2015, respectively	25	25
Additional paid-in capital	183,994	179,357
Accumulated other comprehensive loss	(183)	(151)
Accumulated deficit	(143,507)	(130,618)
Total stockholders’ equity	40,329	48,613
Total liabilities and stockholders’ equity	$ 112,897	$ 120,757

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Undesignated preferred stock, par value	$ 0.001	$ 0.001
Undesignated preferred stock, authorized	20,000,000	20,000,000
Undesignated preferred stock, issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	25,365,572	25,041,643
Common stock, outstanding	25,365,572	25,041,643

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue
Product	$ 19,855	$ 16,305	$ 35,833	$ 29,218
Maintenance and services	16,243	13,663	31,786	26,386
Total revenue	36,098	29,968	67,619	55,604
Cost of revenue
Product	6,628	4,088	11,320	7,511
Maintenance and services	5,453	5,296	10,723	10,223
Total cost of revenue	12,081	9,384	22,043	17,734
Gross profit	24,017	20,584	45,576	37,870
Operating expenses
Research and development	9,533	7,840	18,221	14,711
Sales and marketing	14,923	12,999	29,144	25,018
General and administrative	5,328	4,590	10,754	9,170
Total operating expenses	29,784	25,429	58,119	48,899
Loss from operations	(5,767)	(4,845)	(12,543)	(11,029)
Other income (expense)
Foreign currency exchange (loss) gain	(282)	150	(31)	(312)
Interest and other income (expense), net	(2)	(4)	(11)	(20)
Loss before income taxes	(6,051)	(4,699)	(12,585)	(11,361)
Income taxes	164	727	304	764
Net loss	$ (6,215)	$ (5,426)	$ (12,889)	$ (12,125)
Net loss per share attributable to common stockholders
Basic and diluted	$ (0.25)	$ (0.22)	$ (0.51)	$ (0.51)
Weighted average common shares outstanding used in computing net loss per share attributable to common stockholders
Basic and diluted	25,316	24,144	25,218	24,007

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (6,215)	$ (5,426)	$ (12,889)	$ (12,125)
Other comprehensive loss:
Foreign currency translation adjustments	(22)	51	(32)	7
Comprehensive loss	$ (6,237)	$ (5,375)	$ (12,921)	$ (12,118)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2015	$ 48,613	$ 25	$ 179,357	$ (151)	$ (130,618)
Beginning balance, Shares at Dec. 31, 2015		25,042
Exercise of common stock options	769		769
Exercise of common stock options, Shares		258
Stock-based compensation expense	3,219		3,219
Employee stock purchase plan	649		649
Employee stock purchase plan, Share		66
Net loss	(12,889)				(12,889)
Other comprehensive loss	(32)			(32)
Ending balance at Jun. 30, 2016	$ 40,329	$ 25	$ 183,994	$ (183)	$ (143,507)
Ending balance, Shares at Jun. 30, 2016		25,366

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (12,889)	$ (12,125)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	1,978	1,684
Provision for doubtful accounts	130	(19)
Provision for excess inventory	355
Stock-based compensation	3,219	1,781
Loss on disposal of fixed assets	16	14
Change in value of contingent purchase price liability	(146)	50
Deferred income taxes	246	694
Changes in operating assets and liabilities:
Accounts receivable	4,970	4,479
Prepaid expenses and other current assets	(538)	(616)
Other assets	(995)
Deferred revenue	950	604
Accounts payable	547	1,028
Accrued expenses and other current liabilities	(613)	(2,955)
Other liabilities	270	279
Net cash used in operating activities	(2,500)	(5,102)
Cash flows from investing activities:
Purchases of property and equipment	(1,531)	(644)
Purchases of intangible assets	(1,536)	(437)
Acquisition of business		(18,886)
Net cash used in investing activities	(3,067)	(19,967)
Cash flows from financing activities:
Payment of contingent liability	(214)
Repayments for capital lease obligations, long-term debt and other	(265)	(322)
Proceeds from employee stock purchase plan	649	684
Proceeds from exercise of stock options	727	853
Net cash provided by financing activities	897	1,215
Effect of exchange rates on cash and cash equivalents	(46)	3
Net decrease in cash and cash equivalents	(4,716)	(23,851)
Cash and cash equivalents, beginning of year	51,712	78,524
Cash and cash equivalents, end of year	46,996	54,673
Supplemental disclosures of non-cash investing and financing activities:
Property and equipment purchases included in accounts payable and accrued expenses	258	$ 445
Intangible asset purchases included in accounts payable and accrued expenses	$ 115

Organization and Business

Organization and Business	6 Months Ended
	Jun. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Business	1. Organization and business (a) Description of business Imprivata, Inc. (the “Company”) is a leading provider of IT security and identity solutions to the healthcare industry that help providers securely and efficiently access, communicate and transact patient information. The Company’s security and identity solutions provide authentication management, fast access to patient information, secure communications and positive patient identification to address critical security and compliance challenges faced by hospitals and other healthcare organizations, while improving provider productivity and the patient experience. The Company believes that its solutions save clinicians significant time to focus on patient care, increase their productivity and satisfaction, and help healthcare organizations comply with complex privacy and security regulations. The Company was incorporated in the State of Delaware in May 2001. The Company completed its initial public offering (“IPO”) on June 30, 2014 and is listed on the New York Stock Exchange (“NYSE”) under the ticker symbol “IMPR.” (b) Basis of presentation and principles of consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and as required under the rules and regulations of the United States Securities and Exchange Commission (“SEC”), and on a basis substantially consistent with the audited consolidated financial statements of the Company as of and for the fiscal year ended December 31, 2015. The consolidated balance sheet at December 31, 2015 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by U.S. GAAP. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s 2015 Annual Report on Form 10-K filed with the SEC on March 2, 2016. In the opinion of Company’s management, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of items of a normal and recurring nature) necessary to fairly present the financial position at June 30, 2016, the result of operations for the three and six months ended June 30, 2016 and 2015, cash flows for the six months ended June 30, 2016 and 2015 and stockholders’ equity for the six months ended June 30, 2016. Operating results for the three and six months ended June 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016, for any other interim period or for any other future year. The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, Imprivata Securities Corporation and Imprivata International, Inc., Imprivata UK Limited and Imprivata Australia Pty. Ltd., as well as two branch offices. All intercompany balances and transactions have been eliminated in consolidation. Management believes the Company has sufficient cash and availability under its letter of credit to sustain operations through at least the next 12 months. (c) Use of estimates When preparing financial statements in conformity with U.S. GAAP, we make estimates and assumptions that affect the reported amounts of assets and liabilities and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates and such differences could be material. (d) Foreign currency The foreign subsidiaries and branches use the local currency as the functional currency. The Company translates the assets and liabilities of its foreign operations into U.S. dollars based on the rates of exchange in effect as of the balance sheet date. Revenues and expenses are translated into U.S. dollars using average exchange rates for each period. The resulting adjustments from the translation process are included in accumulated other comprehensive loss in the accompanying consolidated balance sheets. Certain transactions of the Company are settled in foreign currency, and are thus translated to U.S. dollars at the rate of exchange in effect at the end of each month. Gains (losses) resulting from the translation are included in foreign exchange gains (losses) in the accompanying consolidated statements of operations.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of significant accounting policies The Company has not made any significant changes in the application of its significant accounting policies as described in Note 2 of its audited consolidated financial statements for the year ended December 31, 2015 included in its 2015 Annual Report on Form 10-K filed with the SEC on March 2, 2015. See “Note 2. Summary of significant accounting policies” in the 2015 Annual Report on Form 10-K for information about these critical accounting policies. Recent accounting guidance Accounting standards or updates not yet effective In May 2014, the Financial Accounting Standards Board (“FASB”) issued an Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers” (Topic 606) and issued subsequent amendments to the initial guidance in August 2015, March 2016, April 2016 and May 2016 within ASU 2015-04, ASU 2016-08, ASU 2016-10 and ASU 2016-12, respectively (ASU 2014-09, ASU 2015-04, ASU 2016-08, ASU 2016-10 and ASU 2016-12 collectively, Topic 606). Topic 606 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is effective for public companies with annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Earlier adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance. This guidance could impact the timing and amounts of revenue recognized. The Company is currently evaluating the effect that implementation of this guidance and any amendments will have on the Company’s consolidated financial statements upon adoption. Any changes to the guidance resulting from the proposed amendments could change the Company’s assessment of the impact that adoption might have on the Company’s consolidated financial statements and could impact the Company’s decision on whether or not to early adopt. In July 2015, the FASB issued ASU No. 2015-11, “Simplifying the Measurement of Inventory,” (Topic 330). ASU No. 2015-11 requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Inventory measured using last-in, first-out and the retail inventory method are not impacted by the new guidance. This guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years. Prospective application is required. Early adoption is permitted as of the beginning of an interim or annual reporting period. The Company measures inventory using first-in, first out method and anticipates adopting this guidance. The Company does not believe the adoption of this guidance will have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued its new lease accounting standard ASU No. 2016-02, “Leases,” (Topic 842). ASU No. 2016-02 requires lessees to recognize virtually all leases on the balance sheet, by recording a right-of-use asset and lease liability. This guidance will be effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption of the guidance is permitted upon issuance of ASU No. 2016-02. This guidance requires modified retrospective transition, which requires application of the new guidance at the beginning of the earliest comparative period presented in the year of adoption. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In March 2016, the FASB issued ASU No. 2016-09, “Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” The ASU simplifies the accounting for the taxes related to stock based compensation, including adjustments to how excess tax benefits should be classified. This guidance will be effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This guidance that changes the impairment model for most financial assets and certain other instruments. The guidance will replace current “incurred loss” approach with an “expected credit loss” impairment model and will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. This guidance requires applying provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The standard is effective for annual periods beginning after December 15, 2019, and interim periods therein. Early adoption is permitted for all entities for annual periods beginning after December 1, 2018 and interim periods therein. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption.

Business Combination

Business Combination	6 Months Ended
	Jun. 30, 2016
Business Combinations [Abstract]
Business Combination	3. Business combination HT Systems, LLC Acquisition On April 30, 2015, the Company acquired 100% of the equity of HT Systems, LLC. (“HT Systems”), a provider of palm-vein based biometric patient identification systems, to enter into the positive patient identification market for a purchase price of $19.1 million. The Company incurred acquisition-related costs of $709,000, which were included in general and administrative expenses in the consolidated statement of operations during 2015. The acquisition of HT Systems and its PatientSecure biometric patient identification technology supports the Company’s long-term vision to be the leading provider of healthcare IT security solutions that increase provider productivity, enable patient engagement, and improve patient safety. The Company has contingent obligations to pay up to $5.0 million of potential additional earn-out consideration to the selling equity-holders of HT Systems, which will be determined based upon the achievement of certain sales targets over the two-year period following the closing of the transaction on April 30, 2015, provided, that the selling equity-holders remain employees of the Company when the earn-out consideration becomes payable. The earn-out consideration will be recognized in the Company’s consolidated financial statements as compensation expense as earned. For the three months ended June 30, 2016, the Company recorded $182,000 in compensation expense associated with the earn-out consideration based on the probability of achieving sales targets. The Company did not record compensation expense for the three and six months ended June 30, 2015. In addition, the Company will pay up to $1.9 million in retention-based payments to the selling equity-holders payable in cash two years from the closing date of April 30, 2015, contingent upon continued employment as of the payment date. Additional retention-based payments of $341,000, payable in cash, are payable to other employees 8 to 20 months following the date of acquisition, contingent upon their continued employment on the payment dates. The retention-based payments will be recognized in the Company’s consolidated statements of operations as compensation expense over the employment period. Purchase Price Allocation Under the acquisition method of accounting, the Company allocated the purchase price to the identifiable assets and liabilities based on their estimated fair value, which was determined by management using the best information available as of the date of the acquisition (Level 3 inputs). The allocation of the HT Systems purchase consideration to the identifiable assets acquired and liabilities assumed was as follows: Useful lives (dollars in thousands) Amount (in years) Assets: Accounts and unbilled receivables $ 7,195 Prepaid expenses and other current assets 20 Property and equipment 59 3 Intangible assets 3,291 4 to 7 Liabilities assumed: Accrued expenses (85 ) Deferred revenue (1,730 ) Net assets acquired 8,750 Goodwill 10,325 Total fair value consideration $ 19,075 Methodologies used in valuing the intangible assets include, but are not limited to the relief from royalty method and multi-period excess earnings method. The excess of the purchase price over the total net identifiable assets has been recorded as goodwill, which includes synergies expected from the expanded service capabilities and the value of the assembled work force in accordance with U.S. GAAP. The Company made an election under Internal Revenue Code section 338 to treat the acquisition of the stock as an asset purchase. As a result, the Company will corporate level tax deductions associated with the fair market value of net tangible assets, intangible assets, and goodwill.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	4 . Fair value measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. (a) Fair value hierarchy The accounting guidance for fair value measurement requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities. Level 2 applies to assets or liabilities for which there are inputs other than quoted prices that are observable for the asset or liability, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data. Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities. (b) Assets and liabilities measured at fair value on a recurring basis The Company’s cash equivalents primarily consist of money market funds recorded at cost, which approximates fair value based on quoted prices for assets traded in active markets. The contingent consideration liabilities are recorded at fair value determined using a probability weighted discounted cash flow model primarily based upon future revenue and sales projections. The following table sets forth the Company’s assets and liabilities which are measured at fair value on a recurring basis by level within the fair value hierarchy: Fair value measurements at June 30, 2016 Total (in thousands) Level 1 Level 2 Level 3 carrying value Assets Cash equivalents: Money market funds $ 978 $ — $ — $ 978 Certificates of deposit — 97 — 97 Liabilities Contingent consideration — — 458 458 Fair value measurements at December 31, 2015 Total (in thousands) Level 1 Level 2 Level 3 carrying value Assets Cash equivalents: Money market funds $ 2,689 $ — $ — $ 2,689 Certificates of deposit — 97 — 97 Liabilities Contingent consideration — — 818 818 (c) Assets and liabilities measured on a non-recurring basis There were no fair value measurements on a non-recurring basis during the three and six months ended June 30, 2016. In April 2015, the Company completed an acquisition of HT Systems. Under the acquisition method of accounting, the Company allocated the purchase price to the identifiable assets and liabilities based on their estimated fair values which are level 3 inputs. Refer to “Note 3. Business combination” for additional information. (d) Level 3 fair value measurements Contingent consideration The contingent liability associated with the acquisition of Validus is based on an earn-out capped at $9.8 million to be paid based on revenue generated using the respective purchased intellectual properties. The Company re-measures the fair value of the contingent liability at each balance sheet date based on the present value of forecasted revenues through June 30, 2016. The changes in the fair value are primarily due to the difference in actual revenue earned to date versus the initial projections and revisions to the timing and amount of forecasted future revenues. The resulting forecasted revenues are then discounted using a rate that reflects the uncertainty surrounding the expected outcomes, which the Company believes is appropriate and representative of a market participant assumption. The following table presents a reconciliation of the contingent liability measured at fair value using significant unobservable inputs, and the revaluation amount recorded in the Company’s consolidated statements of operations as a result of the change in fair value: June 30, December 31, (in thousands) 2016 2015 Beginning balance as of January 1 st $ 818 $ 632 Revaluation recognized in general and administrative expenses in the corresponding statements of operations (146 ) 197 Cash payment on the contingent liability (214 ) (11 ) Ending balance $ 458 $ 818 This following table presents the significant unobservable inputs used in the valuation of the contingent liability: June 30, December 31, 2016 2015 Discount Rate 17% 17% (e) Other financial instruments The carrying amounts reflected in the consolidated balance sheets for cash and cash equivalents (which are comprised primarily of deposit accounts), accounts receivable, prepaid expenses, other current assets, accounts payable, and accrued expenses approximate fair value due to their short-term maturities.

Trade Accounts Receivable, Net

Trade Accounts Receivable, Net of Allowances	6 Months Ended
	Jun. 30, 2016
Receivables [Abstract]
Trade Accounts Receivable, Net of Allowances	5 . Trade accounts receivable, net of allowances The following table presents the Company’s trade accounts receivable, net: June 30, December 31, (in thousands) 2016 2015 Trade accounts receivable (1) $ 32,198 $ 35,815 Unbilled receivables (2) 1,718 1,171 Total trade accounts receivable 33,916 36,986 Allowance for doubtful accounts (288 ) (158 ) Allowance for sales returns (199 ) (199 ) Total allowance (487 ) (357 ) Trade accounts receivable, net $ 33,429 $ 36,629 (1) Trade accounts receivables represent amounts due from customers when the Company has invoiced for product, maintenance and/or professional services and it has not yet received payment. (2) Unbilled receivables represent amounts due from customers when the Company has delivered the goods and services, but the Company has not invoiced the customer due to the contractual terms of the arrangement. As of June 30, 2016 and December 31, 2015, the Company had $1.7 million and $1.2 million, respectively, unbilled receivables presented in Accounts receivable, net of allowances in the consolidated balance sheets. The unbilled receivables are primarily related to contracts acquired in the acquisition of HT Systems. As of June 30, 2016, $995,000 of these unbilled receivables are long term commitments and are presented in Other assets in the condensed consolidated balance sheets.

Inventory

Inventory	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Inventory	6. Inventory Inventories are stated at the lower of cost or market and consist principally of purchased materials consisting of appliances and devices and included in other current assets. Cost is determined using the first-in, first-out method for devices, with the specific identification method used for appliances. The components of inventories are as follows: June 30, December 31, (in thousands) 2016 2015 Finished goods 541 $ 1,051 Raw materials 17 146 Total $ 558 $ 1,197 When recorded, inventory reserves are intended to reduce the carrying value of inventories to their net realizable value. The Company establishes inventory reserves when conditions exist that indicate inventory may be in excess of anticipated demand or is obsolete based upon assumptions about future demand for the Company’s products or market conditions. The Company regularly evaluates the ability to realize the value of inventories based on a combination of factors including the following: forecasted sales or usage, estimated product end of life dates, estimated current and future market value and new product introductions. During the three and six months ended June 30, 2016, the Company recorded $265,000 and $412,000, respectively, for excess and obsolete inventories. The Company recorded immaterial charges for excess and obsolete inventories for the year ended December 31, 2015.

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	7. Intangible assets Internally-developed software costs As of June 30, 2016 and December 31, 2015, the Company recorded $2.9 million and $1.2 million, respectively, of costs associated with an internally developed software project for one of its existing product offerings. The costs, which primarily consist of third party developer expenses, are included in Intangible assets in the consolidated balance sheets. This product is currently being developed and as of June 30, 2016, no amortization has been recorded.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 30, 2016
Payables And Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	8. Accrued expenses and other current liabilities The following table presents the details of the Company’s accrued expenses and other current liabilities: June 30, December 31, (in thousands) 2016 2015 Accrued payroll and related $ 6,522 $ 8,212 Accrued taxes (1) 1,030 933 Other accrued expenses 3,600 2,422 $ 11,152 $ 11,567 (1) Accrued taxes consist of accruals for foreign and state taxes, sales and use taxes, value added taxes due in foreign jurisdictions and franchise taxes.

Warranty Obligations

Warranty Obligations	6 Months Ended
	Jun. 30, 2016
Guarantees [Abstract]
Warranty Obligations	9. Warranty obligations The Company maintains an allowance for warranty obligations that may be incurred under its limited warranty. Factors that affect the Company’s allowance for warranty obligations include the number of installed units currently under warranty, historical and anticipated rates of warranty claims on those units, and the cost per claim to satisfy the Company’s warranty obligation. The following table presents the details of the Company’s allowance for warranty obligations: June 30, December 31, (in thousands) 2016 2015 Beginning balance $ 40 $ 40 Provision for estimated claims 6 44 Adjustment to estimate — — Settlement of claims (6 ) (44 ) Ending balance $ 40 $ 40 The warranty obligations are included in accrued expenses and other current liabilities in the consolidated balance sheets presented.

Debt

Debt	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Debt	10. Debt Bank credit facility The Company has a revolving credit facility with a bank pursuant to a Loan and Security Agreement dated January 30, 2009 (the “Revolving Credit Facility”). The Revolving Credit Facility expires in April 2017. In April 2016, the Company amended its revolving credit facility to extend the maturity through April 2017. In April 2015, the Company amended its revolving credit facility to extend the maturity through April 2016 and increased the borrowing limit from $10.0 million to $15.0 million based primarily on accounts receivable, and is subject to certain financial covenants requiring the Company to maintain minimum levels of liquidity. Outstanding borrowings accrue interest at the Wall Street Journal published prime rate plus 0.75%. Substantially all of the assets of the Company are pledged as collateral. At June 30, 2016 and December 31, 2015, there were no outstanding borrowings under the revolving credit facility.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2016
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. Commitments and contingencies (a) Operating lease obligations The Company’s principal headquarters is located in Lexington, Massachusetts. The Company currently leases approximately 99,000 square feet of office space under a lease expiring in 2021. The Company leases offices for research and development in San Francisco, California. The Company currently leases approximately 5,029 square feet of office space under a lease expiring in June 2023. The remaining lease payments are $2.9 million. The Company leases approximately 3,500 square feet of office space located in Tampa, Florida as a result of its acquisition of HT Systems. The lease agreement is between HT Systems and a separate entity owned by the selling equity-holders of HT Systems and expires on expires on March 31, 2017. The remaining lease payments are $46,000. (b) Litigation On February 2, 2016, a complaint was filed in the United States District Court for the District of Massachusetts captioned Coyer v. Imprivata, Inc., et al , on behalf of a putative class of Imprivata stockholders, naming as defendants The Company believes that the likelihood of an unfavorable judgment arising from this matter is remote based on the information currently available. The Company does not believe the ultimate resolution of the legal matter referred to above will have a material adverse effect on the Company’s net income, financial condition or liquidity in a future period. However, given the inherent unpredictability of litigation and the fact that this litigation is still in its early stages, the Company is unable to predict with certainty the outcome of this litigation or reasonably estimate a possible loss or range of loss associated with this litigation at this time. (c) Indemnifications As permitted under Delaware law, the Company’s Certificate of Incorporation and By Laws provide that the Company indemnify its stockholders, officers, directors, and partners, and each person controlling the stock held for certain events or occurrences that happen by reason of the relationship with or position held at the Company. The Company’s agreements with customers generally require the Company to indemnify the customer against claims in which the Company’s products infringe third-party patents, copyrights, or trademarks, and indemnify against product liability matters. As of June 30, 2016 and December 31, 2015, the Company had not experienced any material losses related to these indemnification obligations, and no material claims with respect thereto were outstanding. The Company does not expect significant claims related to these indemnification obligations and, consequently, concluded that the fair value of these obligations is negligible, and no related reserves were established.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
Accumulated Other Comprehensive Loss	12. Accumulated other comprehensive loss The following table presents the changes in accumulated other comprehensive loss before taxes, as the tax effect is not material to the consolidated financial statements: Foreign Affected Translation statement where net (in thousands) Adjustments income is presented Balance as of January 1, 2015 $ (100 ) Other comprehensive loss (17 ) Amounts reclassified from accumulated other comprehensive income: Closure of foreign branch (34 ) Other income (expense) Net current-period other comprehensive loss (51 ) Balance as of December 31, 2015 (151 ) Other comprehensive loss 15 Amounts reclassified from accumulated other comprehensive income: Closure of foreign branch (47 ) Other income (expense) Net current-period other comprehensive loss (32 ) Balance as of June 30, 2016 $ (183 )

Stock Award Plans and Stock Bas

Stock Award Plans and Stock Based Compensation	6 Months Ended
	Jun. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Award Plans and Stock Based Compensation	13. Stock award plans and stock based compensation (a) Equity incentive plan In May 2014, the Company’s 2014 Stock Option and Incentive Plan (“2014 Plan”), was adopted by the Company’s board of directors and approved by its stockholders and became effective in June 2014. The 2014 Plan replaced the Amended and Restated 2002 Stock Option and Incentive Plan (“2002 Plan”) as the Company’s board of directors has determined not to make additional awards under the 2002 Plan. The 2014 Plan allows the compensation committee to make equity-based incentive awards to the Company’s officers, employees, directors and other key persons (including consultants). Stock options expire no later than 10 years from the date of grant and generally vest over a period of four years. At the discretion of the Board of Directors, certain option grants may be immediately exercisable but subject to a right to repurchase, at cost, pursuant to the vesting schedule of the individual grant. During the six months ended June 30, 2016, the Company granted 1,917,750 options to purchase common stock at a weighted average exercise price of $11.63. At June 30, 2016, there were 1,401,315 shares available for future grant under the 2014 Plan. (b) Employee stock purchase plan In May 2014, the Company’s board of directors adopted and its stockholders approved the Employee Stock Purchase Plan (“ESPP”). Each employee who is a participant in the ESPP may purchase shares by authorizing payroll deductions of his or her base compensation during an offering period. Unless the participating employee has previously withdrawn from the offering, his or her accumulated payroll deductions will be used to purchase ordinary shares on the last business day of the offering period at a price equal to 85% of the fair market value of the common stock on the first business day or the last business day of the offering period, whichever is lower. All offering periods will be for six months and begin on March 1 st 1 st At February 29, 2016, the Company issued 66,179 shares of common stock at a purchase price of $9.81. At February 27, 2015, the Company issued 58,793 shares of common stock at a purchase price of $11.64. At August 31, 2015, the Company issued 45,969 shares of common stock at a purchase price of $11.63. At June 30, 2016, there were 765,596 shares available for future grant under the ESPP. (c) Early exercise of stock options The Company issues stock option agreements to Company executives and members of the Board of Directors, which may permit options to be exercised at any time. The Company may also include an early exercise provision for incentive stock option agreements at its discretion. The unvested shares of common stock exercised are subject to the Company’s right to repurchase at the original exercise price upon termination of employment or other relationship. At June 30, 2016 and December 31, 2015, a total of 13,125 and 21,875 shares of unvested stock options exercised were subject to repurchase at an aggregate price of $60,834 and $102,000, respectively. These amounts are recorded as accrued and other current liabilities in the Company’s consolidated balance sheets and will be reclassified to equity as the Company’s repurchase right lapses. During the three months ended June 30, 2016 and 2015, 4,375 and 4,375 stock options associated with the early exercise vested, respectively. During the six months ended June 30, 2016 and 2015, 8,750 and 9,577 stock options associated with the early exercise vested, respectively. (d) Valuation of share-based compensation The Company utilizes the Black-Scholes option-pricing model to estimate the fair value of stock options awarded to employees and rights to acquire stock under the ESPP, which requires several key assumptions to be made. Weighted average assumptions related to stock options used to apply this model were as follows: Three Months ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Risk-free interest rate(1) 1.39% - 1.74% 1.77 % 1.39% - 1.74% 1.77 % Expected life (years)(2) 6.02 6.02 6.02 6.02 Expected dividend yield(3) — % — % — % — % Expected volatility of underlying stock(4) 45% - 48% 47 % 45% - 48% 47 % The assumptions used to estimate the fair value of the rights to acquire stock under the ESPP during the offering periods are presented below: March 1, 2016 to August 31, 2016 September 1, 2015 to February 29, 2016 March 1, 2015 to August 31, 2015 June 25, 2014 to February 28, 2015 Risk-free interest rate(1) 0.50 % 0.26 % 0.07 % 0.08 % Expected life (years)(5) 0.50 0.50 0.50 0.68 Expected dividend yield(3) — % — % — % — % Expected volatility of underlying stock(4) 72 % 40 % 55 % 40 % (1) Risk-free interest rate (2) Expected life (3) Expected dividend yield (4) Expected volatility (5) Expected life-ESPP (e) Summary of share-based compensation expense The Company uses the straight-line attribution method to recognize expense for stock-based awards such that the expense associated with awards is evenly recognized throughout the period. Stock-based compensation included in costs and operating expenses related to the awards of stock options and the employee stock purchase plan are as follows: Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2016 2015 2016 2015 Cost of maintenance and professional services $ 160 $ 102 $ 289 $ 162 Research and development 421 326 767 549 Sales and marketing 540 253 881 468 General and administrative 741 399 1,282 602 Total $ 1,862 $ 1,080 $ 3,219 $ 1,781

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	14. Income taxes The Company operates in several tax jurisdictions and are subject to taxes in each country or jurisdiction in which it conducts business. Earnings from its activities outside of the United States are subject to local country income tax and may be subject to U.S. income tax. To date, the Company has incurred cumulative net losses and maintain a full valuation allowance on its net deferred tax assets. Therefore, the Company has not recorded any U.S. federal tax provisions for its earnings to date and its effective tax rate differs from statutory rates. The Company’s tax expense for earnings primarily relates to foreign income taxes, mainly from its international operations, and to a lesser extent, state income tax provisions. As of December 31, 2015, the Company’s valuation allowance related to income taxes was approximately $36.0 million. The Company is in a three year cumulative loss position in the United States. As a result, the Company maintains a full valuation allowance to reduce the carrying value of the related deferred tax assets to zero. The Company will continue to maintain a full valuation allowance for such tax assets until sustainable future levels of profitability are evident. The Company does not consider deferred tax liabilities related to indefinite lived assets to be sources of income, which can support the realizability of deferred tax assets, and has provided for tax expense and a corresponding deferred tax liability associated with these naked credits. Income tax expense related to tax deductible goodwill During the three and six months ended June 30, 2016, the Company recorded U.S. tax expense of $141,000 and $256,000, respectively, which is primarily related to the tax expense associated with indefinite lived deferred tax liabilities related to tax basis in acquired goodwill. The Company does not consider deferred tax liabilities related to indefinite lived assets to be sources of income which can support the realizability of deferred tax assets, and has provided for tax expense and a corresponding deferred tax liability associated with these indefinite lived deferred tax liabilities. As of June 30, 2016 and December 31, 2015, the Company had no uncertain positions or unrecorded liabilities for uncertain tax positions. Interest and penalty charges, if any, related to uncertain tax positions would be classified as income tax expense in the accompanying consolidated statements of operations. As of June 30, 2016 and December 31, 2015, the Company had no accrued interest or penalties related to uncertain tax positions.

Computation of Net Loss Per Sha

Computation of Net Loss Per Share	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Computation of Net Loss Per Share	15. Computation of net loss per share The Company calculates basic and diluted net loss per common share by dividing the net loss adjusted for the accretion on the redeemable convertible preferred stock by the weighted average number of common shares outstanding during the period. The Company has excluded all potentially dilutive shares, which include warrant for common stock, common stock subject to repurchase and outstanding common stock options, from the weighted average number of common shares outstanding as their inclusion in the computation for all periods would be anti-dilutive due to net losses. The Company’s redeemable convertible preferred stock are participating securities as defined under the authoritative guidance, but are excluded from the earnings per share calculation as they do not have an obligation to share or fund in the Company’s net losses. The components of net loss per share are as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share data) 2016 2015 2016 2015 Numerator: Net loss $ (6,215 ) $ (5,426 ) $ (12,889 ) $ (12,125 ) Denominator: Weighted average common shares outstanding used in computing basic and diluted net loss per common share 25,316 24,144 25,218 24,007 Net loss per share, basic and diluted $ (0.25 ) $ (0.22 ) $ (0.51 ) $ (0.51 ) The following common stock equivalents were excluded from the computation of diluted net loss per share attributable to common stockholders because they had an antidilutive impact: Three and Six Months Ended June 30, (in thousands) 2016 2015 Options to purchase common stock 5,647 4,757 Common stock subject to repurchase 39 31 Total $ 5,686 $ 4,788

Concentration of Risk and Off-B

Concentration of Risk and Off-Balance Sheet Risk	6 Months Ended
	Jun. 30, 2016
Text Block [Abstract]
Concentration of Risk and Off-Balance Sheet Risk	16. Concentration of risk and off-balance sheet risk Financial instruments that subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains substantially all of its cash and cash equivalents in institutional money market mutual funds. The fund provides daily liquidity and invests in a portfolio of short-term money market instruments. To manage accounts receivable credit risk, the Company continuously evaluates the creditworthiness of its customers and resellers and maintains allowances for potential credit losses. For the three and six months ended June 30, 2016, one reseller accounted for 18% and 20% of revenues, respectively; no other reseller or customer accounted for more than 10% of revenues. For the three and six months ended June 30, 2015, no customer or reseller accounted for more than 10% of revenues. At June 30, 2016, one reseller accounted for 18% of accounts receivable; no other reseller or customer accounted for more than 10% of the accounts receivable. At December 31, 2015, one reseller accounted for 12% of accounts receivable; no other reseller or customer accounted for more than 10% of accounts receivable. The Company does not have any off-balance sheet arrangements and did not have any such arrangements during the six months ended June 30, 2016 and the year ended December 31, 2015.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	17. Related Party Transactions The Company completed its acquisition of HT Systems on April 30, 2015. The Company has contingent obligations to pay up to $5.0 million of potential additional earn-out consideration to the selling equity-holders of HT Systems, which will be determined based upon the achievement of certain sales targets over the two-year period following the closing of the transaction on April 30, 2015. The earn-out consideration will be paid to each of the selling equity-holders of HT Systems, based on their equity ownership of HT Systems prior to the acquisition, provided that such selling equity-holder remains an employee of the Company at the time the earn-out becomes payable. Each of the selling equity-holder became employees of the Company upon the closing of the acquisition on April 30, 2015. One selling equity-holder is a member of the Company’s executive management team, but is not a director, executive officer or five percent holder of the Company’s equity securities. No payments associated with the earn-out have been made during the three and six months ended June 30, 2016. The Company leases office space, located in Tampa, Florida, under an operating lease agreement with a separate entity owned by the selling equity-holders of HT Systems. The lease is at a market rate with a one year term expiring on March 31, 2017. The Company made rental payments totaling $15,000 and $30,000 during the three and six months ended June 30, 2016, respectively. The Company made rental payments totaling $10,000 during the three and six months ended June 30, 2015.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Event	18. Subsequent Event On July 13, 2016, the Company entered into an Agreement and Plan of Merger (“Merger Agreement”) with Project Brady Holdings, LLC (“Parent”) and Project Brady Merger Sub, Inc., a wholly-owned subsidiary of Parent (“Merger Sub”), providing for the merger of Merger Sub with and into the Company (“Merger”), with the Company surviving the Merger as a wholly-owned subsidiary of Parent. Parent and Merger Sub were formed by an affiliate of private equity investment firm Thoma Bravo, LLC (“Thoma Bravo”). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of common stock, par value $0.001 per share, of the Company (the “Company Common Stock”) issued and outstanding (other than dissenting shares or shares owned by Parent or Merger Sub) will be cancelled and automatically converted into the right to receive cash in an amount equal to $19.25, without interest thereon (the “Per Share Price”). Consummation of the Merger, which is currently expected to close in the third quarter of 2016, is subject to customary closing conditions, including, without limitation, the absence of certain legal impediments, the expiration or termination of the required waiting periods under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and approval by the affirmative vote of the holders of a majority of the outstanding shares of Company common stock as of the record date to be established for the special stockholders meeting to approve the transaction, voting as a single class. Upon the termination of the Merger Agreement, under specified circumstances, the Company will be required to pay Parent a termination fee of $13.6 million. The foregoing description of the Merger Agreement is only a summary, does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is attached as Exhibit 2.1 to the Current Report on Form 8-K filed with the SEC on July 13, 2016 and is incorporated herein by reference.

Organization and Business (Poli

Organization and Business (Policies)	6 Months Ended
	Jun. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of presentation and principles of consolidation	(b) Basis of presentation and principles of consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and as required under the rules and regulations of the United States Securities and Exchange Commission (“SEC”), and on a basis substantially consistent with the audited consolidated financial statements of the Company as of and for the fiscal year ended December 31, 2015. The consolidated balance sheet at December 31, 2015 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by U.S. GAAP. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s 2015 Annual Report on Form 10-K filed with the SEC on March 2, 2016. In the opinion of Company’s management, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of items of a normal and recurring nature) necessary to fairly present the financial position at June 30, 2016, the result of operations for the three and six months ended June 30, 2016 and 2015, cash flows for the six months ended June 30, 2016 and 2015 and stockholders’ equity for the six months ended June 30, 2016. Operating results for the three and six months ended June 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016, for any other interim period or for any other future year. The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, Imprivata Securities Corporation and Imprivata International, Inc., Imprivata UK Limited and Imprivata Australia Pty. Ltd., as well as two branch offices. All intercompany balances and transactions have been eliminated in consolidation. Management believes the Company has sufficient cash and availability under its letter of credit to sustain operations through at least the next 12 months.
Use of estimates	(c) Use of estimates When preparing financial statements in conformity with U.S. GAAP, we make estimates and assumptions that affect the reported amounts of assets and liabilities and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates and such differences could be material.
Foreign currency	(d) Foreign currency The foreign subsidiaries and branches use the local currency as the functional currency. The Company translates the assets and liabilities of its foreign operations into U.S. dollars based on the rates of exchange in effect as of the balance sheet date. Revenues and expenses are translated into U.S. dollars using average exchange rates for each period. The resulting adjustments from the translation process are included in accumulated other comprehensive loss in the accompanying consolidated balance sheets. Certain transactions of the Company are settled in foreign currency, and are thus translated to U.S. dollars at the rate of exchange in effect at the end of each month. Gains (losses) resulting from the translation are included in foreign exchange gains (losses) in the accompanying consolidated statements of operations.
Recent accounting guidance	Recent accounting guidance Accounting standards or updates not yet effective In May 2014, the Financial Accounting Standards Board (“FASB”) issued an Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers” (Topic 606) and issued subsequent amendments to the initial guidance in August 2015, March 2016, April 2016 and May 2016 within ASU 2015-04, ASU 2016-08, ASU 2016-10 and ASU 2016-12, respectively (ASU 2014-09, ASU 2015-04, ASU 2016-08, ASU 2016-10 and ASU 2016-12 collectively, Topic 606). Topic 606 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is effective for public companies with annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Earlier adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance. This guidance could impact the timing and amounts of revenue recognized. The Company is currently evaluating the effect that implementation of this guidance and any amendments will have on the Company’s consolidated financial statements upon adoption. Any changes to the guidance resulting from the proposed amendments could change the Company’s assessment of the impact that adoption might have on the Company’s consolidated financial statements and could impact the Company’s decision on whether or not to early adopt. In July 2015, the FASB issued ASU No. 2015-11, “Simplifying the Measurement of Inventory,” (Topic 330). ASU No. 2015-11 requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Inventory measured using last-in, first-out and the retail inventory method are not impacted by the new guidance. This guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years. Prospective application is required. Early adoption is permitted as of the beginning of an interim or annual reporting period. The Company measures inventory using first-in, first out method and anticipates adopting this guidance. The Company does not believe the adoption of this guidance will have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued its new lease accounting standard ASU No. 2016-02, “Leases,” (Topic 842). ASU No. 2016-02 requires lessees to recognize virtually all leases on the balance sheet, by recording a right-of-use asset and lease liability. This guidance will be effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption of the guidance is permitted upon issuance of ASU No. 2016-02. This guidance requires modified retrospective transition, which requires application of the new guidance at the beginning of the earliest comparative period presented in the year of adoption. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In March 2016, the FASB issued ASU No. 2016-09, “Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” The ASU simplifies the accounting for the taxes related to stock based compensation, including adjustments to how excess tax benefits should be classified. This guidance will be effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This guidance that changes the impairment model for most financial assets and certain other instruments. The guidance will replace current “incurred loss” approach with an “expected credit loss” impairment model and will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. This guidance requires applying provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The standard is effective for annual periods beginning after December 15, 2019, and interim periods therein. Early adoption is permitted for all entities for annual periods beginning after December 1, 2018 and interim periods therein. The Company is evaluating the impact this guidance will have on its consolidated financial statements upon adoption.

Business Combination (Tables)

Business Combination (Tables)	6 Months Ended
	Jun. 30, 2016
Business Combinations [Abstract]
Schedule of Purchase Consideration to Assets Acquired and Liabilities Assumed	Under the acquisition method of accounting, the Company allocated the purchase price to the identifiable assets and liabilities based on their estimated fair value, which was determined by management using the best information available as of the date of the acquisition (Level 3 inputs). The allocation of the HT Systems purchase consideration to the identifiable assets acquired and liabilities assumed was as follows: Useful lives (dollars in thousands) Amount (in years) Assets: Accounts and unbilled receivables $ 7,195 Prepaid expenses and other current assets 20 Property and equipment 59 3 Intangible assets 3,291 4 to 7 Liabilities assumed: Accrued expenses (85 ) Deferred revenue (1,730 ) Net assets acquired 8,750 Goodwill 10,325 Total fair value consideration $ 19,075

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table sets forth the Company’s assets and liabilities which are measured at fair value on a recurring basis by level within the fair value hierarchy: Fair value measurements at June 30, 2016 Total (in thousands) Level 1 Level 2 Level 3 carrying value Assets Cash equivalents: Money market funds $ 978 $ — $ — $ 978 Certificates of deposit — 97 — 97 Liabilities Contingent consideration — — 458 458 Fair value measurements at December 31, 2015 Total (in thousands) Level 1 Level 2 Level 3 carrying value Assets Cash equivalents: Money market funds $ 2,689 $ — $ — $ 2,689 Certificates of deposit — 97 — 97 Liabilities Contingent consideration — — 818 818
Reconciliation of Contingent Liability Measured at Fair Value	The following table presents a reconciliation of the contingent liability measured at fair value using significant unobservable inputs, and the revaluation amount recorded in the Company’s consolidated statements of operations as a result of the change in fair value: June 30, December 31, (in thousands) 2016 2015 Beginning balance as of January 1 st $ 818 $ 632 Revaluation recognized in general and administrative expenses in the corresponding statements of operations (146 ) 197 Cash payment on the contingent liability (214 ) (11 ) Ending balance $ 458 $ 818
Significant Unobservable Inputs Used in Valuation of Contingent Liability	This following table presents the significant unobservable inputs used in the valuation of the contingent liability: June 30, December 31, 2016 2015 Discount Rate 17% 17%

Trade Accounts Receivable, Ne29

Trade Accounts Receivable, Net of Allowances (Tables)	6 Months Ended
	Jun. 30, 2016
Receivables [Abstract]
Trade Accounts Receivable, Net	The following table presents the Company’s trade accounts receivable, net: June 30, December 31, (in thousands) 2016 2015 Trade accounts receivable (1) $ 32,198 $ 35,815 Unbilled receivables (2) 1,718 1,171 Total trade accounts receivable 33,916 36,986 Allowance for doubtful accounts (288 ) (158 ) Allowance for sales returns (199 ) (199 ) Total allowance (487 ) (357 ) Trade accounts receivable, net $ 33,429 $ 36,629 (1) Trade accounts receivables represent amounts due from customers when the Company has invoiced for product, maintenance and/or professional services and it has not yet received payment. (2) Unbilled receivables represent amounts due from customers when the Company has delivered the goods and services, but the Company has not invoiced the customer due to the contractual terms of the arrangement.

Inventory (Tables)

Inventory (Tables)	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Schedule of Components of Inventories	The components of inventories are as follows: June 30, December 31, (in thousands) 2016 2015 Finished goods 541 $ 1,051 Raw materials 17 146 Total $ 558 $ 1,197

Accrued Expenses and Other Cu31

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2016
Payables And Accruals [Abstract]
Summary of Accrued Expenses and Other Current Liabilities	The following table presents the details of the Company’s accrued expenses and other current liabilities: June 30, December 31, (in thousands) 2016 2015 Accrued payroll and related $ 6,522 $ 8,212 Accrued taxes (1) 1,030 933 Other accrued expenses 3,600 2,422 $ 11,152 $ 11,567 (1) Accrued taxes consist of accruals for foreign and state taxes, sales and use taxes, value added taxes due in foreign jurisdictions and franchise taxes.

Warranty Obligations (Tables)

Warranty Obligations (Tables)	6 Months Ended
	Jun. 30, 2016
Guarantees [Abstract]
Summary of Allowance for Warranty Obligations	The following table presents the details of the Company’s allowance for warranty obligations: June 30, December 31, (in thousands) 2016 2015 Beginning balance $ 40 $ 40 Provision for estimated claims 6 44 Adjustment to estimate — — Settlement of claims (6 ) (44 ) Ending balance $ 40 $ 40

Accumulated Other Comprehensi33

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Loss Before Taxes	The following table presents the changes in accumulated other comprehensive loss before taxes, as the tax effect is not material to the consolidated financial statements: Foreign Affected Translation statement where net (in thousands) Adjustments income is presented Balance as of January 1, 2015 $ (100 ) Other comprehensive loss (17 ) Amounts reclassified from accumulated other comprehensive income: Closure of foreign branch (34 ) Other income (expense) Net current-period other comprehensive loss (51 ) Balance as of December 31, 2015 (151 ) Other comprehensive loss 15 Amounts reclassified from accumulated other comprehensive income: Closure of foreign branch (47 ) Other income (expense) Net current-period other comprehensive loss (32 ) Balance as of June 30, 2016 $ (183 )

Stock Award Plans and Stock B34

Stock Award Plans and Stock Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Estimated Weighted-Average Assumptions Related to Stock Options Used in Calculation of Fair Value of Options Granted and Rights to Acquire Stock Under ESPP	Weighted average assumptions related to stock options used to apply this model were as follows: Three Months ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Risk-free interest rate(1) 1.39% - 1.74% 1.77 % 1.39% - 1.74% 1.77 % Expected life (years)(2) 6.02 6.02 6.02 6.02 Expected dividend yield(3) — % — % — % — % Expected volatility of underlying stock(4) 45% - 48% 47 % 45% - 48% 47 % The assumptions used to estimate the fair value of the rights to acquire stock under the ESPP during the offering periods are presented below: March 1, 2016 to August 31, 2016 September 1, 2015 to February 29, 2016 March 1, 2015 to August 31, 2015 June 25, 2014 to February 28, 2015 Risk-free interest rate(1) 0.50 % 0.26 % 0.07 % 0.08 % Expected life (years)(5) 0.50 0.50 0.50 0.68 Expected dividend yield(3) — % — % — % — % Expected volatility of underlying stock(4) 72 % 40 % 55 % 40 % (1) Risk-free interest rate (2) Expected life (3) Expected dividend yield (4) Expected volatility (5) Expected life-ESPP
Schedule of Stock-Based Compensation Expense	Stock-based compensation included in costs and operating expenses related to the awards of stock options and the employee stock purchase plan are as follows: Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2016 2015 2016 2015 Cost of maintenance and professional services $ 160 $ 102 $ 289 $ 162 Research and development 421 326 767 549 Sales and marketing 540 253 881 468 General and administrative 741 399 1,282 602 Total $ 1,862 $ 1,080 $ 3,219 $ 1,781

Computation of Net Loss Per S35

Computation of Net Loss Per Share (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Summary of Components of Net Loss per Share	The components of net loss per share are as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share data) 2016 2015 2016 2015 Numerator: Net loss $ (6,215 ) $ (5,426 ) $ (12,889 ) $ (12,125 ) Denominator: Weighted average common shares outstanding used in computing basic and diluted net loss per common share 25,316 24,144 25,218 24,007 Net loss per share, basic and diluted $ (0.25 ) $ (0.22 ) $ (0.51 ) $ (0.51 )
Summary of Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share	The following common stock equivalents were excluded from the computation of diluted net loss per share attributable to common stockholders because they had an antidilutive impact: Three and Six Months Ended June 30, (in thousands) 2016 2015 Options to purchase common stock 5,647 4,757 Common stock subject to repurchase 39 31 Total $ 5,686 $ 4,788

Organization and Business - Add

Organization and Business - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2016Branches
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Incorporated state	Delaware
Month and Year of incorporation	2001-05
Number of branches	2
Cash availability, term	12 months

Business Combination - Addition

Business Combination - Additional Information (Detail) - USD ($)	Apr. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Business Acquisition [Line Items]
Business acquisition purchase price					$ 18,886,000
Earn-Out Consideration [Member]
Business Acquisition [Line Items]
Compensation expense associated with earn-out consideration		$ 182,000	$ 0	$ 182,000	$ 0
HT Systems [Member]
Business Acquisition [Line Items]
Percentage of acquired equity interest	100.00%
Business acquisition purchase price	$ 19,100,000
Business combination, acquisition related costs	$ 709,000
Payment period for payments based on achieving certain sales targets	2 years
HT Systems [Member] | Earn-Out Consideration [Member]
Business Acquisition [Line Items]
Amount paid based on achieving certain sales target	$ 5,000,000
Payment period for payments based on achieving certain sales targets	2 years
HT Systems [Member] | Continued Employment
Business Acquisition [Line Items]
Amount paid on retention-based payments	$ 1,900,000
Payment period for retention-based payments	2 years
Additional retention payments for employees	$ 341,000
Business combination employee retention payments period, minimum	8 months
Business combination employee retention payments period, maximum	20 months

Business Combination - Schedule

Business Combination - Schedule of Purchase Consideration to Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Goodwill	$ 11,885	$ 14,380
HT Systems [Member]
Assets:
Accounts and unbilled receivables	7,195
Prepaid expenses and other current assets	20
Property and equipment	59
Intangible assets	$ 3,291
Property and equipment, useful life	3 years
Liabilities assumed:
Accrued expenses	$ (85)
Deferred revenue	(1,730)
Net assets acquired	8,750
Current assets:
Goodwill	10,325
Total fair value consideration	$ 19,075
HT Systems [Member] | Minimum [Member]
Assets:
Finite lived intangible assets, useful life	4 years
HT Systems [Member] | Maximum [Member]
Assets:
Finite lived intangible assets, useful life	7 years

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2014
Liabilities
Contingent consideration	$ 9,800
Fair Value Measurements on a Recurring Basis [Member]
Liabilities
Contingent consideration	458	$ 818
Money Market Funds [Member] | Fair Value Measurements on a Recurring Basis [Member]
Assets
Cash equivalents fair value on a recurring	978	2,689
Certificates of Deposit [Member] | Fair Value Measurements on a Recurring Basis [Member]
Assets
Cash equivalents fair value on a recurring	97	97
Level 1 [Member] | Money Market Funds [Member] | Fair Value Measurements on a Recurring Basis [Member]
Assets
Cash equivalents fair value on a recurring	978	2,689
Level 2 [Member] | Certificates of Deposit [Member] | Fair Value Measurements on a Recurring Basis [Member]
Assets
Cash equivalents fair value on a recurring	97	97
Level 3 [Member]
Liabilities
Contingent consideration	458	818	$ 632
Level 3 [Member] | Fair Value Measurements on a Recurring Basis [Member]
Liabilities
Contingent consideration	$ 458	$ 818

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	Jun. 30, 2016USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent liability	$ 9,800,000
Fair Value, Measurements, Non-recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurements on a non-recurring basis	$ 0

Fair Value Measurements - Recon

Fair Value Measurements - Reconciliation of Contingent Liability Measured at Fair Value (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Business Acquisition Contingent Consideration [Line Items]
Revaluation recognized in general and administrative expenses in the corresponding statements of operations	$ (146)	$ 50
Ending balance	9,800
Level 3 [Member]
Business Acquisition Contingent Consideration [Line Items]
Beginning balance	818	$ 632	$ 632
Revaluation recognized in general and administrative expenses in the corresponding statements of operations	(146)		197
Cash payment on the contingent liability	(214)		(11)
Ending balance	$ 458		$ 818

Fair Value Measurements - Signi

Fair Value Measurements - Significant Unobservable Inputs Used in Valuation of Contingent Liability (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate	17.00%	17.00%

Trade Accounts Receivable, Ne43

Trade Accounts Receivable, Net of Allowances - Trade Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Trade accounts receivable, net	$ 33,429	$ 36,629
Trade Accounts Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Total trade accounts receivable	33,916	36,986
Unbilled receivables	1,718	1,171
Allowance for doubtful accounts	(288)	(158)
Allowance for sales returns	(199)	(199)
Total allowance	(487)	(357)
Trade accounts receivable, net	33,429	36,629
Trade Accounts Receivable [Member] | Trade Accounts Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Total trade accounts receivable	$ 32,198	$ 35,815

Trade Accounts Receivable, Ne44

Trade Accounts Receivable, Net of Allowances - Additional Information (Detail) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Other assets	$ 1,022,000	$ 23,000
HT Systems [Member]
Accounts Notes And Loans Receivable [Line Items]
Unbilled receivables primarily due to the acquisition of HT Systems	1,700,000	$ 1,200,000
Other assets	$ 995,000

Inventory - Schedule of Compone

Inventory - Schedule of Components of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 541	$ 1,051
Raw materials	17	146
Total	$ 558	$ 1,197

Inventory - Additional Informat

Inventory - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Inventory Disclosure [Abstract]
Reserve for excess and obsolete inventories	$ 265,000	$ 412,000

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Costs associated with internally developed software project	$ 2,900,000	$ 1,200,000
Internally-developed Software Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 0

Accrued Expenses and Other Cu48

Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Accrued payroll and related	$ 6,522	$ 8,212
Accrued taxes	1,030	933
Other accrued expenses	3,600	2,422
Total	$ 11,152	$ 11,567

Warranty Obligations - Summary

Warranty Obligations - Summary of Allowance for Warranty Obligations (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Guarantees [Abstract]
Beginning balance	$ 40	$ 40
Provision for estimated claims	6	44
Settlement of claims	(6)	(44)
Ending balance	$ 40	$ 40

Debt - Additional Information (

Debt - Additional Information (Detail) - Loan and Security Agreement [Member] - Revolving Credit Facility [Member] - USD ($)	1 Months Ended	6 Months Ended
	Apr. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Mar. 31, 2015
Line of Credit Facility [Line Items]
Credit facility maturity date	Apr. 30, 2016	Apr. 30, 2017
Maximum borrowing limit on accounts receivable	$ 15,000,000			$ 10,000,000
Outstanding revolving credit facility		$ 0	$ 0
Prime Rate [Member]
Line of Credit Facility [Line Items]
Outstanding borrowings, interest rate		0.75%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	1 Months Ended	6 Months Ended
	Apr. 30, 2015USD ($)ft²	Jun. 30, 2016USD ($)ft²
HT Systems [Member]
Operating Leased Assets [Line Items]
Lease payments | $	$ 46,000
Operating lease office space	3,500
Operating lease expiration date		Mar. 31, 2017
Massachusetts [Member]
Operating Leased Assets [Line Items]
Operating lease office space square feet		99,000
Operating lease termination year		2,021
San Francisco, California [Member]
Operating Leased Assets [Line Items]
Operating lease office space square feet		5,029
Operating leases expiration month and year		2023-06
Lease payments | $		$ 2,900,000

Accumulated Other Comprehensi52

Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss Before Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (151)
Other comprehensive loss	$ (22)	$ 51	(32)	$ 7
Amounts reclassified from accumulated other comprehensive income:
Net current-period other comprehensive loss			(32)
Ending balance	(183)		(183)		$ (151)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(151)	$ (100)	(100)
Other comprehensive loss			15		(17)
Amounts reclassified from accumulated other comprehensive income:
Other income (expense)			(47)		(34)
Net current-period other comprehensive loss			(32)		(51)
Ending balance	$ (183)		$ (183)		$ (151)

Stock Award Plans and Stock B53

Stock Award Plans and Stock Based Compensation - Additional Information (Detail) - USD ($)	Feb. 29, 2016	Aug. 31, 2015	Feb. 27, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options expiration period						10 years
Stock options vesting period						4 years
Employee stock purchase plan fair market value of the common stock						85.00%
Share based compensation unvested stock options				13,125		13,125		21,875
Share based compensation stock options repurchase						$ 60,834		$ 102,000
2014 Stock Option and Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted						1,917,750
Weighted average price						$ 11.63
Common stock, capital shares reserved for future instance				1,401,315		1,401,315
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future instance				765,596		765,596
Common stock, issued	66,179	45,969	58,793
Common stock, purchase price	$ 9.81	$ 11.63	$ 11.64
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option associated with early exercise vested				4,375	4,375	8,750	9,577

Stock Award Plans and Stock B54

Stock Award Plans and Stock Based Compensation - Schedule of Estimated Weighted-Average Assumptions Related to Stock Options Used in Calculation of Fair Value of Options Granted and Rights to Acquire Stock Under ESPP (Detail)	3 Months Ended		6 Months Ended					8 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Aug. 31, 2016	Jun. 30, 2016	Feb. 29, 2016	Aug. 31, 2015	Jun. 30, 2015	Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		1.77%					1.77%
Risk-free interest rate, minimum	1.39%			1.39%
Risk-free interest rate, maximum	1.74%			1.74%
Expected life (years)	6 years 7 days	6 years 7 days		6 years 7 days			6 years 7 days
Expected volatility of underlying stock		47.00%					47.00%
Expected volatility of underlying stock, minimum	45.00%			45.00%
Expected volatility of underlying stock, maximum	48.00%			48.00%
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate					0.26%	0.07%		0.08%
Expected life (years)					6 months	6 months		8 months 5 days
Expected volatility of underlying stock					40.00%	55.00%		40.00%
Employee Stock Purchase Plan [Member] | Scenario Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate			0.50%
Expected life (years)			6 months
Expected volatility of underlying stock			72.00%

Stock Award Plans and Stock B55

Stock Award Plans and Stock Based Compensation - Schedule of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,862	$ 1,080	$ 3,219	$ 1,781
Cost of Maintenance and Professional Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	160	102	289	162
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	421	326	767	549
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	540	253	881	468
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 741	$ 399	$ 1,282	$ 602

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Valuation allowance related to income taxes			$ 36,000,000
Cumulative loss position in United States			3 years
Deferred tax assets			$ 0
U.S. tax expense	$ 141,000	$ 256,000
Liability for uncertain tax positions	0	0	0
Accrued interest or penalties related to uncertain tax positions	$ 0	$ 0	$ 0

Computation of Net Loss Per S57

Computation of Net Loss Per Share - Summary of Components of Net Loss per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Net loss	$ (6,215)	$ (5,426)	$ (12,889)	$ (12,125)
Denominator:
Weighted average common shares outstanding used in computing basic and diluted net loss per common share	25,316	24,144	25,218	24,007
Net loss per share, basic and diluted	$ (0.25)	$ (0.22)	$ (0.51)	$ (0.51)

Computation of Net Loss Per S58

Computation of Net Loss Per Share - Summary of Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share	5,686	4,788	5,686	4,788
Options to Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share	5,647	4,757	5,647	4,757
Common Stock Subject to Repurchase [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted net loss per share	39	31	39	31

Concentration of Risk and Off59

Concentration of Risk and Off-Balance Sheet Risk - Additional Information (Detail) - Customer Concentration Risk [Member] - Customer	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Revenues [Member]
Concentration Risk [Line Items]
Number of customers or resellers accounted for more than 10% of revenues or accounts receivable	1	0	1	0
Concentration risk percentage	18.00%	10.00%	20.00%	10.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of customers or resellers accounted for more than 10% of revenues or accounts receivable			1		1
Concentration risk percentage			18.00%		12.00%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	Apr. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
HT Systems [Member]
Related Party Transaction [Line Items]
Amount paid based on achieving certain sales target	$ 5,000,000
Payment period for payments based on achieving certain sales targets	2 years
Selling Members of HT Systems [Member] | HT Systems [Member]
Related Party Transaction [Line Items]
Payment associated with earn out		$ 0		$ 0
Member of Executive Management Team [Member]
Related Party Transaction [Line Items]
Lease term				1 year
Lease expiration period				Mar. 31, 2017
Rent expense		$ 15,000	$ 10,000	$ 30,000	$ 10,000

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jul. 13, 2016	Jun. 30, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Common stock, par value		$ 0.001	$ 0.001
Subsequent Event [Member] | Thoma Bravo, LLC [Member]
Subsequent Event [Line Items]
Common stock, par value	$ 0.001
Conversion of each issued and outstanding shares of common stock into right to receive cash	$ 19.25
Contingent merger agreement termination fee	$ 13.6