Rapid7 (RPD) 10-Q 8 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 01, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	RAPID7, INC.
Entity Central Index Key	1,560,327
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Trading Symbol	RPD
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		43,550,301

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 53,068	$ 53,148
Short-term investments	31,213	18,779
Accounts receivable, net of allowance for doubtful accounts of $1,240 and $1,061 at June 30, 2017 and December 31, 2016, respectively	47,560	49,154
Prepaid expenses and other current assets	8,892	9,152
Total current assets	140,733	130,233
Long-term investments	8,799	20,162
Property and equipment, net	8,287	8,088
Goodwill	75,110	75,110
Intangible assets, net	8,294	8,946
Other assets	630	764
Total assets	241,853	243,303
Current liabilities:
Accounts payable	2,257	4,012
Accrued expenses	20,667	23,499
Deferred revenue, current portion	126,085	116,903
Other current liabilities	1,334	1,195
Total current liabilities	150,343	145,609
Deferred revenue, non-current portion	54,344	52,160
Other long-term liabilities	2,539	3,496
Total liabilities	207,226	201,265
Stockholders’ equity:
Preferred stock, $0.01 par value per share; 10,000,000 shares authorized at June 30, 2017 and December 31, 2016; 0 shares issued at June 30, 2017 and December 31, 2016	0	0
Common stock, $0.01 par value per share; 100,000,000 shares authorized at June 30, 2017 and December 31, 2016; 44,005,649 and 43,018,737 shares issued at June 30, 2017 and December 31, 2016, respectively; 43,532,061 and 42,554,683 shares outstanding at June 30, 2017 and December 31, 2016, respectively	435	426
Treasury stock, at cost, 473,588 and 464,054 shares at June 30, 2017 and December 31, 2016, respectively	(4,531)	(4,391)
Additional paid-in-capital	450,394	435,360
Accumulated other comprehensive loss	(46)	(19)
Accumulated deficit	(411,625)	(389,338)
Total stockholders’ equity	34,627	42,038
Total liabilities and stockholders’ equity	$ 241,853	$ 243,303

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Net of allowance for doubtful accounts	$ 1,240	$ 1,061
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	44,005,649	43,018,737
Common stock, shares outstanding	43,532,061	42,554,683
Treasury stock, shares	473,588	464,054

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Products	$ 27,168	$ 21,456	$ 53,110	$ 41,601
Maintenance and support	11,338	8,962	22,140	17,343
Professional services	8,937	6,850	17,438	13,120
Total revenue	47,443	37,268	92,688	72,064
Cost of revenue:
Products	5,557	2,687	10,267	5,285
Maintenance and support	1,850	1,758	3,728	3,439
Professional services	5,672	4,848	11,348	9,281
Total cost of revenue	13,079	9,293	25,343	18,005
Total gross profit	34,364	27,975	67,345	54,059
Operating expenses:
Research and development	11,873	12,932	23,266	25,274
Sales and marketing	27,132	21,680	51,942	44,448
General and administrative	7,256	6,644	14,504	13,237
Total operating expenses	46,261	41,256	89,712	82,959
Loss from operations	(11,897)	(13,281)	(22,367)	(28,900)
Other income (expense), net:
Interest income (expense), net	218	26	387	11
Other income (expense), net	229	(48)	114	148
Loss before income taxes	(11,450)	(13,303)	(21,866)	(28,741)
Provision for income taxes	187	149	316	291
Net loss	$ (11,637)	$ (13,452)	$ (22,182)	$ (29,032)
Net loss per share, basic and diluted (in dollars per share)	$ (0.27)	$ (0.33)	$ (0.52)	$ (0.71)
Weighted-average common shares outstanding, basic and diluted	42,681,287	41,063,613	42,395,450	40,805,641

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (11,637)	$ (13,452)	$ (22,182)	$ (29,032)
Other comprehensive loss:
Change in fair value of investments	(10)	0	(30)	0
Adjustment for net losses realized and included in net loss	3	0	3	0
Total change in unrealized losses on investments	(7)	0	(27)	0
Comprehensive loss	$ (11,644)	$ (13,452)	$ (22,209)	$ (29,032)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (22,182)	$ (29,032)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	3,237	3,419
Stock-based compensation expense	9,450	9,160
Provision for doubtful accounts	478	394
Foreign currency re-measurement gain	(238)	(119)
Other non-cash expenses	175	130
Changes in assets and liabilities:
Accounts receivable	1,240	4,945
Prepaid expenses and other assets	412	(1,401)
Accounts payable	(1,657)	1,904
Accrued expenses	(2,122)	(3,462)
Deferred revenue	11,366	14,405
Other liabilities	(819)	(72)
Net cash (used in) provided by operating activities	(660)	271
Cash flows from investing activities:
Purchases of property and equipment	(2,578)	(1,842)
Capitalization of internal-use software costs	(316)	0
Purchases of investments	(15,828)	0
Sale and maturities of investments	14,605	0
Net cash used in investing activities	(4,117)	(1,842)
Cash flows from financing activities:
Deferred business acquisition payment	(796)	0
Payments of capital lease obligations	0	(68)
Taxes paid related to net share settlement of equity awards	(261)	(3,760)
Proceeds from employee stock purchase plan	1,499	2,096
Proceeds from stock option exercises	4,111	1,431
Net cash provided by (used in) financing activities	4,553	(301)
Effect of exchange rate changes on cash and cash equivalents	144	74
Net increase (decrease) in cash and cash equivalents	(80)	(1,798)
Cash and cash equivalents, beginning of period	53,148	86,553
Cash and cash equivalents, end of period	53,068	84,755
Supplemental cash flow information:
Cash paid for income taxes	623	334
Cash paid for interest	$ 0	$ 1

Description of Business, Basis

Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies	Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies Description of Business Rapid7, Inc. and subsidiaries (“we,” “us” or “our”) is a leading provider of analytics for security and IT operations solutions that enable organizations to implement an active, analytics-driven approach to cyber security and IT operations. Basis of Presentation and Consolidation The accompanying unaudited consolidated financial statements have been prepared by us in accordance with accounting principles generally accepted in the United States of America (GAAP) as well as pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Accordingly, certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2016 filed with the SEC on March 9, 2017. The consolidated financial statements include our results of operations and those of our wholly-owned subsidiaries and reflect all adjustments (consisting solely of normal, recurring adjustments) which are, in the opinion of management, necessary for a fair statement of results for the interim periods presented. All intercompany transactions and balances have been eliminated in consolidation. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for any future period or the entire fiscal year. Significant Accounting Policies There have been no significant changes to our significant accounting policies as of and for the three and six months ended June 30, 2017, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2016. Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting , clarifying when a change to the terms or conditions of a share-based payment award must be accounted for as a modification. The ASU requires modification accounting if the fair value, vesting condition or the classification of the award is not the same immediately before and after a change to the terms and conditions of the award. The ASU will be effective for us on a prospective basis beginning on January 1, 2018, with early adoption permitted. This ASU is not expected to have an impact on our consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory . The ASU is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Current GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. The ASU will allow an entity to recognize the income tax consequences of these transfers when the transfers occur. The ASU will be effective for us in the first quarter of 2018. We are currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The ASU is intended to simplify several aspects of the accounting for share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification on the statement of cash flows. We adopted this ASU on January 1, 2017 and as a result, we have made an accounting policy election to account for forfeitures as they occur. This change has been applied on a modified retrospective basis, resulting in a cumulative-effect adjustment to increase accumulated deficit by $0.1 million as of January 1, 2017. The adoption of this ASU also requires excess tax benefits and tax deficiencies be recorded in the income statement as opposed to additional paid-in capital when the awards vest or are settled, and has been applied on a prospective basis. In connection with the adoption of this ASU, we recorded a cumulative-effect adjustment as of January 1, 2017 to increase gross deferred tax assets and the related valuation allowance against deferred tax assets by $3.4 million . The provisions related to classification of excess tax benefits in the statement of cash flows were adopted prospectively, and as such, the prior periods were not retrospectively adjusted. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The ASU requires companies to recognize on the balance sheet the assets and liabilities for the rights and obligations created by leased assets. The ASU will be effective for us in the first quarter of 2019, with early adoption permitted. We are currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . The ASU outlines a single, comprehensive model for accounting for revenue from contracts with customers and requires more detailed disclosure to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from such contracts. In August 2015, the FASB issued ASU 2015-14, which provides a one-year deferral in the effective date of ASU 2014-09. ASU 2014-09 will now be effective for us beginning January 1, 2018; however, early adoption will be permitted as of the original effective date. We plan to adopt ASU 2014-09 in the first quarter of 2018 and expect to adopt on a modified retrospective basis. Under this method of adoption, we would recognize the cumulative effect of initially applying the standard as an adjustment to the opening balance of retained earnings in the period of initial application. Comparative prior year periods would not be adjusted. We are currently evaluating the potential impact of this standard on our financial position and results of operations. Based on our analysis performed to date, we expect recognition of total revenue related to our term software licenses, managed services, cloud-based subscriptions and stand-alone professional services to remain substantially unchanged. We expect that revenue related to the sale of our AppSpider perpetual software licenses will be recognized at the time of license delivery because software licenses are not dependent on the continued delivery of content subscriptions. We currently recognize revenue related to the sale of our AppSpider perpetual software licenses over the contractual period of maintenance and support due to the lack of vendor-specific objective evidence (VSOE) of selling price of the maintenance and support. We expect that revenue related to the sale of our Nexpose and Metasploit perpetual software licenses will be combined with their related content subscriptions as a single performance obligation when our contracts contain a material right with respect to renewal options. As a result, we expect to recognize the revenue related to the sale of Nexpose and Metasploit perpetual software licenses ratably over the customer's estimated economic life, rather than over the contractual period of maintenance and support. In addition, under the new standard, for software licenses that are sold with professional services in a multiple-element arrangement, the professional services will likely represent a separate performance obligation and we will recognize revenue associated with the professional services as such services are performed. Revenue associated with professional services in a multiple-element arrangement is currently recognized ratably over the related contractual period of maintenance and support (typically one to three years) due to the lack of VSOE of selling price for the contractual elements. In addition, under the new standard, we expect the allocation of contract consideration for multiple-element arrangements to be on a relative fair value basis which may impact both the timing of income recognition and the presentation of revenue by class. Further, under the new standard, we expect to capitalize certain direct and incremental commission costs to obtain a contract and amortize such costs over the customer's estimated economic life rather than expensing them as incurred in the period that the commissions are earned by our employees (which is typically upon signing of an arrangement).

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We measure certain financial assets and liabilities at fair value. Fair value is determined based upon the exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, as determined by either the principal market or the most advantageous market. Inputs used in the valuation techniques to derive fair values are classified based on a three-level hierarchy, as follows: Level 1 : Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 : Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which all significant inputs are observable or can be derived principally from or corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 : Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability. We consider an active market to be one in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis, and consider an inactive market to be one in which there are infrequent or few transactions for the asset or liability, the prices are not current, or price quotations vary substantially either over time or among market makers. The following table presents our financial assets and liabilities measured and recorded at fair value on a recurring basis using the above input categories: As of June 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Description: Assets: Money market funds $ 10,095 $ — $ — $ 10,095 U.S. government agencies 14,965 — — 14,965 Commercial paper — 4,479 — 4,479 Corporate bonds — 15,721 — 15,721 Asset-backed securities — 4,847 — 4,847 Total assets $ 25,060 $ 25,047 $ — $ 50,107 As of December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Description: Assets: Money market funds $ 10,085 $ — $ — $ 10,085 U.S. government agencies 14,982 — — 14,982 Commercial paper — 8,078 — 8,078 Corporate bonds — 10,314 — 10,314 Asset-backed securities — 6,467 — 6,467 Total assets $ 25,067 $ 24,859 $ — $ 49,926 We had no liabilities measured and recorded at fair value on a recurring basis as of June 30, 2017 or December 31, 2016 . Our investments, which are all classified as available-for-sale, consisted of the following: As of June 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Description: U.S. government agencies $ 14,993 $ — $ (28 ) $ 14,965 Commercial paper 4,479 — — 4,479 Corporate bonds 15,736 — (15 ) 15,721 Asset-backed securities 4,850 — (3 ) 4,847 Total assets $ 40,058 $ — $ (46 ) $ 40,012 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Description: U.S. government agencies $ 14,992 $ 3 $ (13 ) $ 14,982 Commercial paper 7,178 — — 7,178 Corporate bonds 10,326 1 (13 ) 10,314 Asset-backed securities 6,464 4 (1 ) 6,467 Total assets $ 38,960 $ 8 $ (27 ) $ 38,941 For all of our investments for which the amortized cost basis was greater than the fair value at June 30, 2017 and December 31, 2016 , we have concluded that there is no plan to sell the security nor is it more likely than not that we would be required to sell the security before its anticipated recovery. In making the determination as to whether the unrealized loss is other-than-temporary, we considered the length of time and extent the investment has been in an unrealized loss position, the financial condition and near-term prospects of the issuers, the issuers’ credit rating and the time to maturity.

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment are recorded at cost and consist of the following: As of As of (in thousands) Computer equipment and software $ 14,189 $ 12,844 Furniture and fixtures 3,614 3,131 Leasehold improvements 8,717 8,077 Total 26,520 24,052 Less accumulated depreciation (18,233 ) (15,964 ) Property and equipment, net $ 8,287 $ 8,088 Depreciation expense was $1.1 million for the three months ended June 30, 2017 and 2016 and $2.3 million and $2.2 million for the six months ended June 30, 2017 and 2016 , respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill was $75.1 million as of June 30, 2017 and December 31, 2016 . The following table presents details of our intangible assets which include acquired identifiable intangible assets and capitalized internal-use software costs: As of June 30, 2017 As of December 31, 2016 Weighted- Average Life (years) Gross Carrying Amount Accumulated Amortization Net Book Value Gross Carrying Amount Accumulated Amortization Net Book Value (in thousands) Intangible assets subject to amortization: Developed technology 6.3 $ 11,231 $ (3,995 ) $ 7,236 $ 11,231 $ (3,118 ) $ 8,113 Customer relationships 6.7 1,000 (274 ) 726 1,000 (197 ) 803 Trade names 6.1 519 (503 ) 16 519 (496 ) 23 Non-compete agreements 2.0 40 (40 ) — 40 (33 ) 7 Total acquired intangible assets 12,790 (4,812 ) 7,978 12,790 (3,844 ) 8,946 Internal-use software 316 — 316 — — — Total intangible assets $ 13,106 $ (4,812 ) $ 8,294 $ 12,790 $ (3,844 ) $ 8,946 Amortization expense was $0.5 million and $0.6 million for the three months ended June 30, 2017 and 2016 , respectively, and $1.0 million and $1.2 million for the six months ended June 30, 2017 and 2016 , respectively. Estimated future amortization expense of the acquired identifiable intangible assets as of June 30, 2017 is as follows (in thousands): 2017 (for the remaining six months) $ 962 2018 1,886 2019 1,859 2020 1,837 2021 1,332 2022 and thereafter 102 Total $ 7,978 The costs associated with the development of internal-use software are not included in the table above, as the projects are currently in development. As such, we have not determined the useful life of the software, nor have all the costs associated with this project been incurred.

Stock-Based Compensation Expens

Stock-Based Compensation Expense	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Expense	Stock-Based Compensation Expense (a) General Stock-based compensation expense for restricted stock, restricted stock units, stock options and issuances of common stock pursuant to our employee stock purchase plan was classified in the accompanying consolidated statements of operations as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) Stock-based compensation expense: Cost of revenue $ 308 $ 142 $ 510 $ 279 Research and development 1,689 1,524 3,202 3,017 Sales and marketing 1,779 1,224 3,182 4,125 General and administrative 1,395 751 2,556 1,739 Total stock-based compensation expense $ 5,171 $ 3,641 $ 9,450 $ 9,160 We recognize compensation cost of all awards on a straight-line basis over the applicable vesting period, which is generally four years. (b) Restricted Stock and Restricted Stock Units Restricted stock and restricted stock unit activity during the six months ended June 30, 2017 was as follows: Restricted Stock Restricted Stock Units Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Unvested balance as of December 31, 2016 585,004 $ 18.05 734,577 $ 13.47 Granted — — 1,423,010 14.11 Vested (156,765 ) 19.04 (200,416 ) 13.72 Forfeited (7,698 ) 23.01 (78,441 ) 13.62 Unvested balance as of June 30, 2017 420,541 $ 17.59 1,878,730 $ 13.92 As of June 30, 2017 , the unrecognized compensation expense related to our unvested restricted stock and restricted stock units expected to vest was $30.6 million . This unrecognized compensation expense will be recognized over an estimated weighted-average amortization period of 3.0 years. During the six months ended June 30, 2017 , we repurchased 9,534 shares of our common stock in settlement of employee tax withholding obligations due upon the vesting of restricted stock. (c) Stock Options Stock option activity during the six months ended June 30, 2017 was as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Outstanding as of December 31, 2016 4,580,375 $ 8.20 Granted 1,266,238 13.38 Exercised (670,533 ) 6.13 $ 7,572 Forfeited/cancelled (134,812 ) 12.41 Outstanding as of June 30, 2017 5,041,268 $ 9.66 7.5 $ 36,564 Vested and exercisable as of June 30, 2017 2,642,121 $ 6.57 6.0 $ 27,278 Vested and expected to vest as of June 30, 2017 4,544,979 $ 9.27 7.1 $ 34,726 As of June 30, 2017 , the unrecognized compensation expense related to our unvested stock options expected to vest was $14.1 million . This unrecognized compensation expense will be recognized over an estimated weighted-average amortization period of 2.9 years. The total fair value of stock options vested in the six months ended June 30, 2017 was $3.2 million . The weighted-average grant date fair value of stock options granted in the six months ended June 30, 2017 was $6.65 per share. (d) Employee Stock Purchase Plan Under the Rapid7, Inc. 2015 Employee Stock Purchase Plan (ESPP), employees may set aside up to 15% of their gross earnings, on an after-tax basis, to purchase our common shares at a discounted price, which is calculated at 85% of the lesser of: (i) the market value of our common stock at the beginning of each offering period and (ii) the market value of our common stock on the applicable purchase date. On March 15, 2017, we issued 138,085 shares of common stock to employees for aggregate proceeds of $1.5 million . The purchase prices of the shares of common stock were $10.60 and $12.79 per share, which were discounted in accordance with the terms of the ESPP from the closing prices of our common stock on March 16, 2016 of $12.47 and on March 15, 2017 of $15.05 , respectively.

Net Loss per Share

Net Loss per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Net Loss per Share	Net Loss per Share The following table summarizes the computation of basic and diluted net loss per share of our common stock for the three and six months ended June 30, 2017 and 2016 : Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands, except share and per share data) Numerator: Net loss $ (11,637 ) $ (13,452 ) $ (22,182 ) $ (29,032 ) Denominator: Weighted-average common shares outstanding, basic and diluted 42,681,287 41,063,613 42,395,450 40,805,641 Net loss per share attributable to common stockholders, basic and diluted $ (0.27 ) $ (0.33 ) $ (0.52 ) $ (0.71 ) The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding for the respective periods below because they would have been anti-dilutive: Three and Six Months Ended June 30, 2017 2016 Options to purchase common stock 5,041,268 4,766,320 Unvested restricted stock 420,541 811,681 Unvested restricted stock units 1,878,730 619,240 Shares to be issued under ESPP 76,647 103,471 Total 7,417,186 6,300,712

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Warranty We provide limited product warranties. Historically, any payments made under these provisions have been immaterial. (b) Litigation and Claims From time to time, we may be a party to litigation or subject to claims incident to the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, we currently believe that the final outcome of these ordinary course matters will not have a material adverse effect on our business. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors. (c) Indemnification Obligations We agree to standard indemnification provisions in the ordinary course of business. Pursuant to these provisions, we agree to indemnify, hold harmless and reimburse the indemnified party for losses suffered or incurred by the indemnified party, generally our customers, in connection with any United States patent, copyright or other intellectual property infringement claim by any third party arising from the use of our products or services in accordance with the agreement or arising from our gross negligence, willful misconduct or violation of the law (provided that there is not gross or willful misconduct on the part of the other party) with respect to our products or services. The term of these indemnification provisions is generally perpetual from the time of execution of the agreement. We carry insurance that covers certain third-party claims relating to our services and limits our exposure. We have never incurred costs to defend lawsuits or settle claims related to these indemnification provisions. As permitted under Delaware law, we have entered into indemnification agreements with our officers and directors, indemnifying them for certain events or occurrences while they serve as officers or directors of the company.

Segment Information and Informa

Segment Information and Information about Geographic Areas	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information and Information about Geographic Areas	Segment Information and Information about Geographic Areas We operate in one segment. Our chief operating decision maker is our chief executive officer, who makes operating decisions, assesses performance and allocates resources on a consolidated basis. Net revenues by geographic area presented based upon the location of the customer were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) North America $ 40,218 $ 32,287 $ 78,211 $ 62,419 Other 7,225 4,981 14,477 9,645 Total $ 47,443 $ 37,268 $ 92,688 $ 72,064 Of the total net revenues generated in North America, 93% and 97% of the revenues were generated in the United States for the three months ended June 30, 2017 and 2016 , respectively, and 93% and 97% of the revenues were generated in the United States for the six months ended June 30, 2017 and 2016 , respectively. Property and equipment, net by geographic area was as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) United States $ 6,939 $ 7,063 Other 1,348 1,025 Total $ 8,287 $ 8,088

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In October 2015, McAfee LLC (formerly known as Intel Security) announced the end-of-sale for the McAfee Vulnerability Manager to customers and partners, effective January 11, 2016, with end-of-life to follow, and announced that we were named their exclusive vulnerability management partner. Under the terms of the commercial agreement, we incur partner referral fees as customers transition from McAfee Vulnerability Manager to Nexpose. During the three and six months ended June 30, 2017 , we recognized sales and marketing expense of $0.9 million and $1.8 million , respectively, related to partner referral fees payable to McAfee LLC. On February 6, 2017, Michael Berry, a member of our Board of Directors, became the Chief Financial Officer of McAfee LLC.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On July 12, 2017, we acquired Komand, Inc. (Komand), a security orchestration and automation company based in Boston, Massachusetts for total cash consideration of $14.8 million . In addition, certain retained employees of Komand (i) received an aggregate of 295,600 restricted stock units which will vest over four years and (ii) shall be eligible for an aggregate of up to $5.0 million of incentive payments contingent on achievement of certain milestones within four years of the acquisition; each restricted stock unit and incentive payment is subject to the employee's continued service. The acquisition will be accounted for under the acquisition method of accounting with the operations of the newly acquired entity included in our operating results from the date of acquisition.

Description of Business, Basi17

Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The accompanying unaudited consolidated financial statements have been prepared by us in accordance with accounting principles generally accepted in the United States of America (GAAP) as well as pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Accordingly, certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2016 filed with the SEC on March 9, 2017. The consolidated financial statements include our results of operations and those of our wholly-owned subsidiaries and reflect all adjustments (consisting solely of normal, recurring adjustments) which are, in the opinion of management, necessary for a fair statement of results for the interim periods presented. All intercompany transactions and balances have been eliminated in consolidation. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for any future period or the entire fiscal year.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting , clarifying when a change to the terms or conditions of a share-based payment award must be accounted for as a modification. The ASU requires modification accounting if the fair value, vesting condition or the classification of the award is not the same immediately before and after a change to the terms and conditions of the award. The ASU will be effective for us on a prospective basis beginning on January 1, 2018, with early adoption permitted. This ASU is not expected to have an impact on our consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory . The ASU is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Current GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. The ASU will allow an entity to recognize the income tax consequences of these transfers when the transfers occur. The ASU will be effective for us in the first quarter of 2018. We are currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The ASU is intended to simplify several aspects of the accounting for share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification on the statement of cash flows. We adopted this ASU on January 1, 2017 and as a result, we have made an accounting policy election to account for forfeitures as they occur. This change has been applied on a modified retrospective basis, resulting in a cumulative-effect adjustment to increase accumulated deficit by $0.1 million as of January 1, 2017. The adoption of this ASU also requires excess tax benefits and tax deficiencies be recorded in the income statement as opposed to additional paid-in capital when the awards vest or are settled, and has been applied on a prospective basis. In connection with the adoption of this ASU, we recorded a cumulative-effect adjustment as of January 1, 2017 to increase gross deferred tax assets and the related valuation allowance against deferred tax assets by $3.4 million . The provisions related to classification of excess tax benefits in the statement of cash flows were adopted prospectively, and as such, the prior periods were not retrospectively adjusted. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The ASU requires companies to recognize on the balance sheet the assets and liabilities for the rights and obligations created by leased assets. The ASU will be effective for us in the first quarter of 2019, with early adoption permitted. We are currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . The ASU outlines a single, comprehensive model for accounting for revenue from contracts with customers and requires more detailed disclosure to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from such contracts. In August 2015, the FASB issued ASU 2015-14, which provides a one-year deferral in the effective date of ASU 2014-09. ASU 2014-09 will now be effective for us beginning January 1, 2018; however, early adoption will be permitted as of the original effective date. We plan to adopt ASU 2014-09 in the first quarter of 2018 and expect to adopt on a modified retrospective basis. Under this method of adoption, we would recognize the cumulative effect of initially applying the standard as an adjustment to the opening balance of retained earnings in the period of initial application. Comparative prior year periods would not be adjusted. We are currently evaluating the potential impact of this standard on our financial position and results of operations. Based on our analysis performed to date, we expect recognition of total revenue related to our term software licenses, managed services, cloud-based subscriptions and stand-alone professional services to remain substantially unchanged. We expect that revenue related to the sale of our AppSpider perpetual software licenses will be recognized at the time of license delivery because software licenses are not dependent on the continued delivery of content subscriptions. We currently recognize revenue related to the sale of our AppSpider perpetual software licenses over the contractual period of maintenance and support due to the lack of vendor-specific objective evidence (VSOE) of selling price of the maintenance and support. We expect that revenue related to the sale of our Nexpose and Metasploit perpetual software licenses will be combined with their related content subscriptions as a single performance obligation when our contracts contain a material right with respect to renewal options. As a result, we expect to recognize the revenue related to the sale of Nexpose and Metasploit perpetual software licenses ratably over the customer's estimated economic life, rather than over the contractual period of maintenance and support. In addition, under the new standard, for software licenses that are sold with professional services in a multiple-element arrangement, the professional services will likely represent a separate performance obligation and we will recognize revenue associated with the professional services as such services are performed. Revenue associated with professional services in a multiple-element arrangement is currently recognized ratably over the related contractual period of maintenance and support (typically one to three years) due to the lack of VSOE of selling price for the contractual elements. In addition, under the new standard, we expect the allocation of contract consideration for multiple-element arrangements to be on a relative fair value basis which may impact both the timing of income recognition and the presentation of revenue by class. Further, under the new standard, we expect to capitalize certain direct and incremental commission costs to obtain a contract and amortize such costs over the customer's estimated economic life rather than expensing them as incurred in the period that the commissions are earned by our employees (which is typically upon signing of an arrangement).

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on Recurring Basis	The following table presents our financial assets and liabilities measured and recorded at fair value on a recurring basis using the above input categories: As of June 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Description: Assets: Money market funds $ 10,095 $ — $ — $ 10,095 U.S. government agencies 14,965 — — 14,965 Commercial paper — 4,479 — 4,479 Corporate bonds — 15,721 — 15,721 Asset-backed securities — 4,847 — 4,847 Total assets $ 25,060 $ 25,047 $ — $ 50,107 As of December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Description: Assets: Money market funds $ 10,085 $ — $ — $ 10,085 U.S. government agencies 14,982 — — 14,982 Commercial paper — 8,078 — 8,078 Corporate bonds — 10,314 — 10,314 Asset-backed securities — 6,467 — 6,467 Total assets $ 25,067 $ 24,859 $ — $ 49,926
Schedule of Available-for-sale Securities Reconciliation	Our investments, which are all classified as available-for-sale, consisted of the following: As of June 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Description: U.S. government agencies $ 14,993 $ — $ (28 ) $ 14,965 Commercial paper 4,479 — — 4,479 Corporate bonds 15,736 — (15 ) 15,721 Asset-backed securities 4,850 — (3 ) 4,847 Total assets $ 40,058 $ — $ (46 ) $ 40,012 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Description: U.S. government agencies $ 14,992 $ 3 $ (13 ) $ 14,982 Commercial paper 7,178 — — 7,178 Corporate bonds 10,326 1 (13 ) 10,314 Asset-backed securities 6,464 4 (1 ) 6,467 Total assets $ 38,960 $ 8 $ (27 ) $ 38,941

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Summary of Property and Equipment	Property and equipment are recorded at cost and consist of the following: As of As of (in thousands) Computer equipment and software $ 14,189 $ 12,844 Furniture and fixtures 3,614 3,131 Leasehold improvements 8,717 8,077 Total 26,520 24,052 Less accumulated depreciation (18,233 ) (15,964 ) Property and equipment, net $ 8,287 $ 8,088

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Identifiable Intangible Assets	The following table presents details of our intangible assets which include acquired identifiable intangible assets and capitalized internal-use software costs: As of June 30, 2017 As of December 31, 2016 Weighted- Average Life (years) Gross Carrying Amount Accumulated Amortization Net Book Value Gross Carrying Amount Accumulated Amortization Net Book Value (in thousands) Intangible assets subject to amortization: Developed technology 6.3 $ 11,231 $ (3,995 ) $ 7,236 $ 11,231 $ (3,118 ) $ 8,113 Customer relationships 6.7 1,000 (274 ) 726 1,000 (197 ) 803 Trade names 6.1 519 (503 ) 16 519 (496 ) 23 Non-compete agreements 2.0 40 (40 ) — 40 (33 ) 7 Total acquired intangible assets 12,790 (4,812 ) 7,978 12,790 (3,844 ) 8,946 Internal-use software 316 — 316 — — — Total intangible assets $ 13,106 $ (4,812 ) $ 8,294 $ 12,790 $ (3,844 ) $ 8,946
Schedule of Estimated Amortization Expense	Estimated future amortization expense of the acquired identifiable intangible assets as of June 30, 2017 is as follows (in thousands): 2017 (for the remaining six months) $ 962 2018 1,886 2019 1,859 2020 1,837 2021 1,332 2022 and thereafter 102 Total $ 7,978

Stock-Based Compensation Expe21

Stock-Based Compensation Expense (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Stock-Based Compensation Expense	Stock-based compensation expense for restricted stock, restricted stock units, stock options and issuances of common stock pursuant to our employee stock purchase plan was classified in the accompanying consolidated statements of operations as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) Stock-based compensation expense: Cost of revenue $ 308 $ 142 $ 510 $ 279 Research and development 1,689 1,524 3,202 3,017 Sales and marketing 1,779 1,224 3,182 4,125 General and administrative 1,395 751 2,556 1,739 Total stock-based compensation expense $ 5,171 $ 3,641 $ 9,450 $ 9,160
Summary of Restricted Stock and Restricted Stock Unit Activity	Restricted stock and restricted stock unit activity during the six months ended June 30, 2017 was as follows: Restricted Stock Restricted Stock Units Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Unvested balance as of December 31, 2016 585,004 $ 18.05 734,577 $ 13.47 Granted — — 1,423,010 14.11 Vested (156,765 ) 19.04 (200,416 ) 13.72 Forfeited (7,698 ) 23.01 (78,441 ) 13.62 Unvested balance as of June 30, 2017 420,541 $ 17.59 1,878,730 $ 13.92
Summary of Stock Option Activity	Stock option activity during the six months ended June 30, 2017 was as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Outstanding as of December 31, 2016 4,580,375 $ 8.20 Granted 1,266,238 13.38 Exercised (670,533 ) 6.13 $ 7,572 Forfeited/cancelled (134,812 ) 12.41 Outstanding as of June 30, 2017 5,041,268 $ 9.66 7.5 $ 36,564 Vested and exercisable as of June 30, 2017 2,642,121 $ 6.57 6.0 $ 27,278 Vested and expected to vest as of June 30, 2017 4,544,979 $ 9.27 7.1 $ 34,726

Net Loss per Share (Tables)

Net Loss per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Summary of Basic and Diluted Net Loss Per Share of Common Stock	The following table summarizes the computation of basic and diluted net loss per share of our common stock for the three and six months ended June 30, 2017 and 2016 : Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands, except share and per share data) Numerator: Net loss $ (11,637 ) $ (13,452 ) $ (22,182 ) $ (29,032 ) Denominator: Weighted-average common shares outstanding, basic and diluted 42,681,287 41,063,613 42,395,450 40,805,641 Net loss per share attributable to common stockholders, basic and diluted $ (0.27 ) $ (0.33 ) $ (0.52 ) $ (0.71 )
Anti-Dilutive Securities Excluded from Computation Diluted Weighted Average Shares Outstanding	The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding for the respective periods below because they would have been anti-dilutive: Three and Six Months Ended June 30, 2017 2016 Options to purchase common stock 5,041,268 4,766,320 Unvested restricted stock 420,541 811,681 Unvested restricted stock units 1,878,730 619,240 Shares to be issued under ESPP 76,647 103,471 Total 7,417,186 6,300,712

Segment Information and Infor23

Segment Information and Information about Geographic Areas (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Net Revenues of Customer by Geographic Area	Net revenues by geographic area presented based upon the location of the customer were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) North America $ 40,218 $ 32,287 $ 78,211 $ 62,419 Other 7,225 4,981 14,477 9,645 Total $ 47,443 $ 37,268 $ 92,688 $ 72,064
Property and Equipment, Net By Geographic Area	Property and equipment, net by geographic area was as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) United States $ 6,939 $ 7,063 Other 1,348 1,025 Total $ 8,287 $ 8,088

Description of Business, Basi24

Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies - Additional Information (Detail) - Accounting Standards Update 2016-09 [Member] $ in Millions	Jun. 30, 2017USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets	$ 3.4
Valuation allowance against deferred tax assets	3.4
Accumulated Deficit [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment	$ 0.1

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 40,012	$ 38,941
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	50,107	49,926
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	25,060	25,067
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	25,047	24,859
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	10,095	10,085
Money Market Funds [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	10,095	10,085
Money Market Funds [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Money Market Funds [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	14,965	14,982
U.S. Government Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	14,965	14,982
U.S. Government Agencies [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	14,965	14,982
U.S. Government Agencies [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. Government Agencies [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,479	7,178
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,479	8,078
Commercial Paper [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Commercial Paper [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,479	8,078
Commercial Paper [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,721	10,314
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,721	10,314
Corporate Bonds [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate Bonds [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,721	10,314
Corporate Bonds [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Asset-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,847	6,467
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,847	6,467
Asset-backed Securities [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Asset-backed Securities [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,847	6,467
Asset-backed Securities [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 0	$ 0

Fair Value Measurements - Avail

Fair Value Measurements - Available for Sale Investments at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 40,058	$ 38,960
Gross Unrealized Gains	0	8
Gross Unrealized Losses	(46)	(27)
Fair Value	40,012	38,941
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,993	14,992
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(28)	(13)
Fair Value	14,965	14,982
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,479	7,178
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	4,479	7,178
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,736	10,326
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(15)	(13)
Fair Value	15,721	10,314
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,850	6,464
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(3)	(1)
Fair Value	$ 4,847	$ 6,467

Property and Equipment - Summar

Property and Equipment - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 26,520	$ 24,052
Less accumulated depreciation	(18,233)	(15,964)
Net property and equipment	8,287	8,088
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,189	12,844
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,614	3,131
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 8,717	$ 8,077

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 1.1	$ 1.1	$ 2.3	$ 2.2

Goodwill and Intangible Asset29

Goodwill and Intangible Assets - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 75,110		$ 75,110		$ 75,110
Amortization expense	$ 500	$ 600	$ 1,000	$ 1,200

Goodwill and Intangible Asset30

Goodwill and Intangible Assets - Schedule of Identifiable Intangible Assets (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 12,790,000	$ 12,790,000
Accumulated Amortization	(4,812,000)	(3,844,000)
Intangible assets, net	7,978,000	8,946,000
Total intangible assets, gross carrying amount	13,106,000	12,790,000
Total intangible assets, net book value	$ 8,294,000	8,946,000
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted- Average Life	6 years 3 months 18 days
Gross Carrying Amount	$ 11,231,000	11,231,000
Accumulated Amortization	(3,995,000)	(3,118,000)
Intangible assets, net	$ 7,236,000	8,113,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted- Average Life	6 years 8 months 12 days
Gross Carrying Amount	$ 1,000,000	1,000,000
Accumulated Amortization	(274,000)	(197,000)
Intangible assets, net	$ 726,000	803,000
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted- Average Life	6 years 1 month 6 days
Gross Carrying Amount	$ 519,000	519,000
Accumulated Amortization	(503,000)	(496,000)
Intangible assets, net	$ 16,000	23,000
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted- Average Life	2 years
Gross Carrying Amount	$ 40,000	40,000
Accumulated Amortization	(40,000)	(33,000)
Intangible assets, net	0	7,000
internal-use Software [Member]
Finite-Lived Intangible Assets [Line Items]
Internal-use software in development	$ 316,000	$ 0

Goodwill and Intangible Asset31

Goodwill and Intangible Assets - Schedule of Estimated Amortization Expense (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
2017 (for the remaining six months)	$ 962
2,018	1,886
2,019	1,859
2,020	1,837
2,021	1,332
2022 and thereafter	102
Intangible assets, net	$ 7,978	$ 8,946

Stock-Based Compensation Expe32

Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 5,171	$ 3,641	$ 9,450	$ 9,160
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	308	142	510	279
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1,689	1,524	3,202	3,017
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	1,779	1,224	3,182	4,125
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 1,395	$ 751	$ 2,556	$ 1,739

Stock-Based Compensation Expe33

Stock-Based Compensation Expense - Additional Information (Detail) - USD ($)	Mar. 15, 2017	Jun. 30, 2017	Mar. 16, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Number of common stock repurchased		9,534
Purchase price of common stock by employees (as a percent)		85.00%
Employee Stock Purchase Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee withholding percentage		15.00%
Restricted Stock And Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 30,577,992
Unrecognized compensation expense, recognition period		2 years 11 months 16 days
Options to Purchase Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period		2 years 10 months 24 days
Unrecognized compensation cost, stock options		$ 14,100,000
Stock options vested, fair value		$ 3,200,000
Stock options granted, weighted-average grant date fair value		$ 6.65
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued to employees (in shares)	138,085
Aggregate proceeds from issuance of common stock to employees	$ 1,500,000
Share issued, price per share (in dollars per share)	$ 12.79		$ 10.60
Closing price of shares issued (in dollars per share)	$ 15.05		$ 12.47

Stock-Based Compensation Expe34

Stock-Based Compensation Expense - Summary of Restricted Stock and Restricted Stock Unit Activity (Detail)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Restricted Stock [Member]
Shares
Unvested balance, Beginning balance (in shares) | shares	585,004
Granted (in shares) | shares	0
Vested (in shares) | shares	(156,765)
Forfeited (in shares) | shares	(7,698)
Unvested balance, Ending balance (in shares) | shares	420,541
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 18.05
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	19.04
Forfeited (in dollars per share) | $ / shares	23.01
Ending Balance (in dollars per share) | $ / shares	$ 17.59
Restricted Stock Units (RSUs) [Member]
Shares
Unvested balance, Beginning balance (in shares) | shares	734,577
Granted (in shares) | shares	1,423,010
Vested (in shares) | shares	(200,416)
Forfeited (in shares) | shares	(78,441)
Unvested balance, Ending balance (in shares) | shares	1,878,730
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 13.47
Granted (in dollars per share) | $ / shares	14.11
Vested (in dollars per share) | $ / shares	13.72
Forfeited (in dollars per share) | $ / shares	13.62
Ending Balance (in dollars per share) | $ / shares	$ 13.92

Stock-Based Compensation Expe35

Stock-Based Compensation Expense - Summary of Stock Option Activity (Detail) - Stock Options [Member] $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares
Shares
Outstanding, Beginning balance (in shares) | shares	4,580,375
Granted (in shares) | shares	1,266,238
Exercised (in shares) | shares	(670,533)
Forfeited/canceled (in shares) | shares	(134,812)
Outstanding, Ending balance (in shares) | shares	5,041,268
Vested and exercisable (in shares) | shares	2,642,121
Vested or expected to vest (in shares) | shares	4,544,979
Weighted Average Exercise Price
Outstanding, Beginning balance (in dollars per share) | $ / shares	$ 8.20
Granted (in dollars per share) | $ / shares	13.38
Exercised (in dollars per share) | $ / shares	6.13
Forfeited/canceled (in dollars per share) | $ / shares	12.41
Outstanding, Ending balance (in dollars per share) | $ / shares	9.66
Vested and exercisable (in dollars per share) | $ / shares	6.57
Vested and expected to vest (in dollars per share) | $ / shares	$ 9.27
Weighted Average Remaining Contractual Life (in years)
Outstanding	7 years 6 months
Vested and exercisable	6 years
Vested and expected to vest	7 years 1 month 6 days
Aggregate Intrinsic Value
Exercised (in dollars) | $	$ 7,572
Outstanding (in dollars) | $	36,564
Vested and exercisable (in dollars) | $	27,278
Vested and expected to vest (in dollars) | $	$ 34,726

Net Loss Per Share - Summary of

Net Loss Per Share - Summary of Basic and Diluted Net Loss Per Share of Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net loss	$ (11,637)	$ (13,452)	$ (22,182)	$ (29,032)
Weighted-average common shares outstanding, basic and diluted	42,681,287	41,063,613	42,395,450	40,805,641
Net loss per share, basic and diluted (in dollars per share)	$ (0.27)	$ (0.33)	$ (0.52)	$ (0.71)

Net Loss Per Share - Summary 37

Net Loss Per Share - Summary of Antidilutive Securities Excluded From Computation Diluted Weighted Average Shares Outstanding (Detail) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	7,417,186	6,300,712
Unvested Restricted Stock [Member]
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	420,541	811,681
Unvested Restricted Stock Units [Member]
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	1,878,730	619,240
Employee Stock Purchase Plan [Member]
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	76,647	103,471
Options to Purchase Common Stock [Member]
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	5,041,268	4,766,320

Segment Information and Infor38

Segment Information and Information about Geographic Areas - Additional Information (Detail) - Segment	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Number of operating segments			1
Total Net Revenues[Member] | United States [Member]
Segment Reporting Information [Line Items]
Percentage of net revenues	93.00%	97.00%	93.00%	97.00%

Segment Information and Infor39

Segment Information and Information about Geographic Areas - Net Revenues of Customer by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Net revenues, Total	$ 47,443	$ 37,268	$ 92,688	$ 72,064
North America [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Net revenues, Total	40,218	32,287	78,211	62,419
Other [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Net revenues, Total	$ 7,225	$ 4,981	$ 14,477	$ 9,645

Segment Information and Infor40

Segment Information and Information about Geographic Areas - Property and Equipment, Net By Geographic Area (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 8,287	$ 8,088
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	6,939	7,063
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 1,348	$ 1,025

Related Party Transactions - Na

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
McAfee LLC [Member]
Related Party Transaction [Line Items]
Sales and marketing expense related to partner referral fees	$ 0.9	$ 1.8

Subsequent Event - Narrative (D

Subsequent Event - Narrative (Details) - USD ($)	Jul. 12, 2017	Jun. 30, 2017	Jun. 30, 2016
Subsequent Event [Line Items]
Total cash consideration		$ 796,000	$ 0
Vesting period		4 years
Komand, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Total cash consideration	$ 14,800,000
Aggregate incentive payments for achievement of milestones, up to	5,000,000
Restricted Stock Units (RSUs) [Member] | Komand, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Equity awards granted to certain retained employees (in shares)	$ 295,600
Vesting period	4 years
Contingent consideration, achievement period	4 years