HubSpot (HUBS) 10-Q 2 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 27, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	HUBS
Entity Registrant Name	HUBSPOT INC
Entity Central Index Key	1,404,655
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		37,025,599

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 175,622	$ 59,702
Short-term investments	316,798	54,648
Accounts receivable — net of allowance for doubtful accounts of $650 and $617 at June 30, 2017 and December 31, 2016, respectively	38,466	38,984
Deferred commission expense	11,149	9,025
Restricted cash		162
Prepaid hosting costs	1,521	5,299
Prepaid expenses and other current assets	20,224	8,433
Total current assets	563,780	176,253
Long-term investments	41,895	35,718
Property and equipment, net	37,618	30,201
Capitalized software development costs, net	7,774	6,523
Restricted cash	5,100	321
Other assets	1,579	966
Goodwill	9,773	9,773
Total assets	667,519	259,755
Current liabilities:
Accounts payable	2,865	4,350
Accrued compensation costs	12,668	11,415
Other accrued expenses	27,354	15,237
Capital lease obligations	780	796
Deferred rent	157	159
Deferred revenue	109,919	95,426
Total current liabilities	153,743	127,383
Capital lease obligations, net of current portion	319	275
Deferred rent, net of current portion	16,780	10,079
Deferred revenue, net of current portion	1,394	1,171
Asset retirement obligations	872	591
Other long-term liabilities	1,944	1,556
Convertible senior notes	288,764
Total liabilities	463,816	141,055
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock	36	36
Additional paid-in capital	467,897	365,444
Accumulated other comprehensive loss	(266)	(864)
Accumulated deficit	(263,964)	(245,916)
Total stockholders’ equity	203,703	118,700
Total liabilities and stockholders’ equity	$ 667,519	$ 259,755

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts	$ 650	$ 617

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Subscription	$ 84,363	$ 60,916	$ 161,866	$ 115,852
Professional services and other	4,730	4,058	9,479	8,082
Total revenue	89,093	64,974	171,345	123,934
Cost of revenues:
Subscription	12,492	9,985	23,901	18,895
Professional services and other	6,099	5,210	11,762	10,271
Total cost of revenues	18,591	15,195	35,663	29,166
Gross profit	70,502	49,779	135,682	94,768
Operating expenses:
Research and development	15,889	11,278	29,259	21,082
Sales and marketing	50,708	39,140	97,380	74,338
General and administrative	14,482	10,391	27,620	20,239
Total operating expenses	81,079	60,809	154,259	115,659
Loss from operations	(10,577)	(11,030)	(18,577)	(20,891)
Other expense:
Interest income	734	201	1,037	380
Interest expense	(2,832)	(93)	(2,884)	(180)
Other expense	(97)	(202)	(225)	(535)
Total other expense	(2,195)	(94)	(2,072)	(335)
Loss before income tax benefit	(12,772)	(11,124)	(20,649)	(21,226)
Income tax benefit	3,251	60	3,053	8
Net loss	$ (9,521)	$ (11,064)	$ (17,596)	$ (21,218)
Net loss per share, basic and diluted	$ (0.26)	$ (0.32)	$ (0.48)	$ (0.61)
Weighted average common shares used in computing basic and diluted net loss per share	36,654	35,023	36,431	34,858

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 Income And Comprehensive Income [Abstract]
Net loss	$ (9,521)	$ (11,064)	$ (17,596)	$ (21,218)
Other comprehensive loss:
Foreign currency translation adjustment	445	(313)	564	88
Changes in unrealized gain on investments, net of income taxes of $2 and $20 for the three and six months ended June 30, 2017 and $40 and $172 for the three and six months ended June 30, 2016	2	69	34	271
Comprehensive loss	$ (9,074)	$ (11,308)	$ (16,998)	$ (20,859)

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Changes in unrealized gain on investments, income taxes	$ 2	$ 40	$ 20	$ 172

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Equity (Deficit) [Member]
Beginning Balance, Amount at Dec. 31, 2016	$ 118,700	$ 36	$ 365,444	$ (864)	$ (245,916)
Beginning Balance, Shares at Dec. 31, 2016		35,784
Issuance of common stock under stock plans, net of shares withheld for employee taxes	5,156		5,156
Issuance of common stock under stock plans, net of shares withheld for employee taxes, Shares		977
Stock-based compensation	23,132		23,132
Cumulative adjustment from adoption of stock compensation standard			452		(452)
Cumulative translation adjustment	564			564
Unrealized gain on investments, net of income taxes of $20	34			34
Equity component of 2022 Notes (Note 6)	73,713		73,713
Net loss	(17,596)				(17,596)
Ending Balance, Amount at Jun. 30, 2017	$ 203,703	$ 36	$ 467,897	$ (266)	$ (263,964)
Ending Balance, Shares at Jun. 30, 2017		36,761

Consolidated Statements of Sto8

Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Statement Of Stockholders Equity [Abstract]
Unrealized gain on investments, income taxes	$ 20

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net loss	$ (17,596)	$ (21,218)
Adjustments to reconcile net loss to net cash and cash equivalents provided by operating activities
Depreciation and amortization	6,977	5,223
Stock-based compensation	22,309	14,705
Benefit for deferred income taxes	(3,544)	(165)
Amortization of debt discount and issuance costs	2,683
(Accretion) amortization of bond discount premium	(55)	411
Noncash rent expense	2,999	1,949
Unrealized currency translation	(195)	(63)
Changes in assets and liabilities, net of acquisition
Accounts receivable	1,161	(385)
Prepaid expenses and other assets	(7,918)	(2,624)
Deferred commission expense	(1,901)	(3)
Accounts payable	(327)	302
Accrued expenses	6,969	1,937
Deferred rent	3,602	(34)
Deferred revenue	12,655	11,786
Net cash and cash equivalents provided by operating activities	27,819	11,821
Investing Activities:
Purchases of investments	(305,277)	(21,111)
Maturities of investments	37,060	21,343
Purchases of property and equipment	(11,072)	(11,269)
Capitalization of software development costs	(3,340)	(2,512)
Purchases of strategic investments	(600)
Restricted cash	(4,589)
Net cash and cash equivalents used in investing activities	(287,818)	(13,549)
Financing Activities:
Employee taxes paid related to the net share settlement of stock-based awards	(2,097)	(1,342)
Proceeds related to the issuance of common stock under stock plans	7,485	6,168
Repayments of capital lease obligations	(518)	(319)
Proceeds of the issuance of convertible notes, net of issuance costs paid of $10,755	389,245
Purchase of note hedge related to convertible notes	(78,920)
Proceeds from the issuance of warrants related to convertible notes, net of issuance costs paid of $200	58,880
Net cash and cash equivalents provided by financing activities	374,075	4,507
Effect of exchange rate changes on cash and cash equivalents	1,844	302
Net increase in cash and cash equivalents	115,920	3,081
Cash and cash equivalents, beginning of period	59,702	55,580
Cash and cash equivalents, end of period	175,622	58,661
Supplemental cash flow disclosure:
Cash paid for interest	191	104
Cash paid for income taxes	410	197
Non-cash investing and financing activities:
Property and equipment acquired under capital lease	547	473
Convertible notes offering costs incurred but not yet paid	12
Capital expenditures incurred but not yet paid	206	$ 867
Asset retirement obligations	$ 400

Consolidated Statements of Ca10

Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Statement Of Cash Flows [Abstract]
Convertible notes, issuance costs	$ 10,755
Warrants, issuance costs	$ 200

Organization and Operations

Organization and Operations	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Organization and Operations	1. Organization and Operations HubSpot, Inc. (the “Company”) was formed as a limited liability company in Delaware on April 4, 2005. The Company converted to a Delaware corporation on June 7, 2007. The Company provides a cloud-based inbound marketing and sales platform which features integrated applications to help businesses attract visitors to their websites, convert visitors into leads, close leads into customers and delight customers so they become promoters of those businesses. These integrated applications include social media, search engine optimization, blogging, website content management, marketing automation, email, CRM, analytics, and reporting. The Company is headquartered in Cambridge, Massachusetts, and has wholly-owned subsidiaries in Dublin, Ireland, which commenced operations in January 2013, in Sydney, Australia, which commenced operations in August 2014, in Singapore, which commenced operations in October 2015, and in Tokyo, Japan, which commenced operations in July 2016. Additionally, the Company has announced that it will open an office in Berlin, Germany in July 2017. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) applicable to interim periods, under the rules and regulations of the United States Securities and Exchange Commission (“SEC”). In the opinion of management, the Company has prepared the accompanying unaudited consolidated financial statements on a basis substantially consistent with the audited consolidated financial statements of the Company as of and for the year ended December 31, 2016, and these consolidated financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results of the interim periods presented. All intercompany balances and transactions have been eliminated in consolidation. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for any subsequent quarter or for the entire year ending December 31, 2017. The year-end balance sheet data was derived from audited financial statements, but this Form 10-Q does not include all disclosures required under GAAP. Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been omitted under the rules and regulations of the SEC. These interim financial statements should be read in conjunction with the audited consolidated financial statements and related notes contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 16, 2017. There have been no changes in the Company’s significant accounting policies from those that were disclosed in the Company’s Annual Report on Form 10-K that have had a material impact on our consolidated financial statements and related notes, except the adoption of updated guidance related to certain aspects of share-based payments to employee described within the Recent Accounting Pronouncements Recent Accounting Pronouncements Recent accounting standards not included below are not expected to have a material impact on our consolidated financial position and results of operations. The Company adopted updated guidance related to certain aspects of share-based payments to employees. The guidance requires the recognition of the income tax effects of awards in the income statement when the awards vest or are settled, thus eliminating additional paid-in capital pools. In addition, the Company changed its policy election to account for forfeitures as they occur rather than on an estimated basis. The change in the policy election related to forfeitures resulted in the Company reclassifying $452 thousand from additional paid-in capital to accumulative deficit for the net cumulative-effect adjustment in stock compensation expense related to prior periods. In January 2017, the Financial Accounting Standards Board (“FASB”) issued guidance simplifying the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new standard is effective beginning in January 2020, with early adoption permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In November 2016, the FASB issued guidance related to the presentation of restricted cash within the statement of cash flows. The guidance requires entities to show the changes in cash, cash equivalents, and restricted cash in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash in the statement of cash flows. As of June 30, 2017, we had $5.1 million in restricted cash. The new standard is effective beginning in the first quarter of 2018, with early adoption permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In February 2016, the FASB issued guidance that requires lessees to recognize most leases on their balance sheets but record expenses on their income statements in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The guidance is effective in 2019 with early adoption permitted. The Company is currently evaluating the impact of this guidance on the consolidated financial statements. In May 2014, the FASB issued updated guidance and disclosure requirements for recognizing revenue. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also provides guidance on the recognition of costs related to obtaining customer contracts. In July 2015, the FASB approved the deferral of the new standard's effective date by one year. The new standard now is effective for annual reporting periods beginning January 1, 2018. The FASB will permit companies to adopt the new standard early, but not before the original effective date of January 1, 2017. The Company will adopt the standard on January 1, 2018, and currently anticipates adopting the standard using the modified retrospective method,

Net Loss per Share

Net Loss per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Net Loss per Share	2. Net Loss per Share Basic net loss per share is computed by dividing net loss by the weighted average number of common shares outstanding for the period. Diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, restricted stock units (“RSUs”), Employee Stock Purchase Plan (“ESPP”), and the Conversion Option of the 2022 Notes (Note 6) are considered to be potential common stock equivalents. A reconciliation of the denominator used in the calculation of basic and diluted net loss per share is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Net loss $ (9,521 ) $ (11,064 ) $ (17,596 ) $ (21,218 ) Weighted-average common shares outstanding — basic 36,654 35,023 36,431 34,858 Dilutive effect of share equivalents resulting from stock options, RSUs, ESPP and the Conversion Option of the 2022 Notes — — — — Weighted-average common shares, outstanding — diluted 36,654 35,023 36,431 34,858 Net loss per share, basic and diluted $ (0.26 ) $ (0.32 ) $ (0.48 ) $ (0.61 ) Additionally, since the Company incurred net losses for each of the periods presented, diluted net loss per share is the same as basic net loss per share. The Company’s outstanding stock options, RSUs, ESPP, and Conversion Option of the 2022 Notes were not included in the calculation of diluted net loss per share as the effect would be anti-dilutive. The following table contains all potentially dilutive common stock equivalents. As of June 30, 2017 2016 (in thousands) Options to purchase common shares 2,501 3,003 RSUs 2,304 2,405 ESPP 5 — The Company expects to settle the principal amount of the 2022 Notes in cash, and therefore, the Company uses the treasury stock method for calculating any potential dilutive effect of the Conversion Option on diluted net income per share, if applicable. The Conversion Option will have a dilutive impact on net income per share of common stock when the average market price of the Company’s common stock for a given period exceeds the conversion price of the 2022 Notes of $94.77 per share.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	3. Fair Value of Financial Instruments The Company measures certain financial assets 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 — Quoted prices in active markets for identical assets or liabilities. • 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 to the valuation methodology that are significant to the measurement of fair value of assets or liabilities. The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets and liabilities at June 30, 2017 and December 31, 2016. June 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents and investments: Money market funds $ 35,003 $ — $ — $ 35,003 Commercial paper — 7,743 — 7,743 Corporate bonds — 74,399 — 74,399 U.S. government agency obligations — 8,981 — 8,981 U.S. Treasury securities — 367,532 — 367,532 Restricted cash: Certificates of deposit — 5,100 — 5,100 Other assets: Strategic investments — — 600 600 Total $ 35,003 $ 463,755 $ 600 $ 499,358 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents and investments: Money market funds $ 32,260 $ — $ — $ 32,260 Commercial paper — 12,439 — 12,439 Corporate bonds — 66,947 — 66,947 U.S. government agency obligations — 10,980 — 10,980 Total $ 32,260 $ 90,366 $ — $ 122,626 The Company considers all highly liquid investments purchased with a remaining maturity of three months or less to be cash equivalents. The fair value of the Company’s investments in certain money market funds is their face value and such instruments are classified as Level 1 and are included in cash and cash equivalents on the consolidated balance sheets. At June 30, 2017 and December 31, 2016, our Level 2 securities were priced by pricing vendors. These pricing vendors utilize the most recent observable market information in pricing these securities or, if specific prices are not available for these securities, use other observable inputs like market transactions involving identical or comparable securities. As of June 30, 2017, the fair value of the 2022 Notes (Note 6) was $392.9 million. The fair value was determined on the basis of market prices observable for similar instruments and is considered Level 2 in the fair value hierarchy. For certain other financial instruments, including accounts receivable, accounts payable, capital leases and other current liabilities, the carrying amounts approximate their fair value due to the relatively short maturity of these balances. Restricted cash is comprised of certificates of deposit related to landlord guarantees for our leased facilities. These restricted cash balances have been excluded from our cash and cash equivalents balance on our consolidated balance sheets. The following tables summarize the composition of our short- and long-term investments at June 30, 2017 and December 31, 2016. June 30, 2017 Amortized Cost Unrealized Gains Unrealized Losses Aggregate Fair Value (in thousands) Commercial paper $ 7,750 $ — $ (7 ) $ 7,743 Corporate bonds 74,530 7 (138 ) 74,399 U.S. government agency obligations 8,998 - (17 ) 8,981 U.S. Treasury securities 267,569 10 (9 ) 267,570 Total $ 358,847 $ 17 $ (171 ) $ 358,693 December 31, 2016 Amortized Cost Unrealized Gains Unrealized Losses Aggregate Fair Value (in thousands) Commercial paper $ 12,446 $ — $ (7 ) $ 12,439 Corporate bonds 67,126 — (179 ) 66,947 U.S. government agency obligations 10,998 — (18 ) 10,980 Total $ 90,570 $ — $ (204 ) $ 90,366 For all of our securities for which the amortized cost basis was greater than the fair value at June 30, 2017, the Company has concluded that there is no plan to sell the security nor is it more likely than not that the Company 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, the Company 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. Contractual Maturities The contractual maturities of short-term and long-term investments held at June 30, 2017 and December 31, 2016 are as follows: June 30, 2017 December 31, 2016 Amortized Cost Basis Aggregate Fair Value Amortized Cost Basis Aggregate Fair Value (in thousands) (in thousands) Due within one year $ 316,864 $ 316,798 $ 54,694 $ 54,648 Due after 1 year through 2 years 41,983 41,895 35,876 35,718 Total $ 358,847 $ 358,693 $ 90,570 $ 90,366

Property and Equipment, Net

Property and Equipment, Net	6 Months Ended
	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Property and Equipment, Net	4. Property and Equipment, Net Property and equipment, net consists of the following: June 30, 2017 December 31, 2016 (in thousands) Computer equipment and purchased software $ 3,900 $ 3,237 Employee computer equipment 2,303 1,534 Furniture and fixtures 10,030 8,174 Office equipment 2,460 2,326 Leasehold improvements 29,704 23,693 Equipment under capital lease 2,958 2,412 Internal-use software 2,170 1,301 Construction in progress 1,096 322 Total property and equipment 54,621 42,999 Less accumulated depreciation and amortization (17,003 ) (12,798 ) Property and equipment, net $ 37,618 $ 30,201 Depreciation and amortization expense on property and equipment was $2.2 million for the three months ended June 30, 2017, $4.1 million for the six months ended June 30, 2017, $1.5 million for the three months ended June 30, 2016 and $2.5 million for the six months ended June 30, 2016.

Capitalized Software Developmen

Capitalized Software Development Costs	6 Months Ended
	Jun. 30, 2017
Research And Development [Abstract]
Capitalized Software Development Costs	5. Capitalized Software Development Costs Capitalized software development costs, exclusive of those recorded within property and equipment, consisted of the following: June 30, 2017 December 31, 2016 (in thousands) Gross capitalized software development costs $ 29,053 $ 25,152 Accumulated amortization (21,279 ) (18,629 ) Capitalized software development costs, net $ 7,774 $ 6,523 Capitalized software development costs are amortized on a straight-line basis over their estimated useful life of two to three years. The following table summarizes software development costs capitalized, stock-based compensation included in capitalized software development costs, and amortization of capitalized software development costs. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Software development costs capitalized $ 1,999 $ 1,278 $ 3,901 $ 2,600 Stock-based compensation included in capitalized software development costs $ 485 $ 313 $ 823 $ 506 Amortization of software development costs $ 1,477 $ 1,486 $ 2,846 $ 2,682

0.25% Convertible Senior Notes,

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant	6. 0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant In May 2017, the Company issued $350 million aggregate principal amount of 0.25% convertible senior notes due June 1, 2022 (the “Maturity Date”) in a private offering and an additional $50 million aggregate principal amount of such notes pursuant to the exercise in full of the over-allotment options of the initial purchasers (the “2022 Notes”). The interest rates are fixed at 0.25% per annum and are payable semi-annually in arrears on June 1 and December 1 of each year, commencing on December 1, 2017. The total net proceeds from the debt offering, after deducting initial purchase discounts and debt issuance costs, were approximately $389.2 million. Each $1,000 principal amount of the 2022 Notes will initially be convertible into 10.5519 shares of the Company’s common stock (the “Conversion Option”), which is equivalent to an initial conversion price of approximately $94.77 per share, subject to adjustment upon the occurrence of specified events. The 2022 Notes will be convertible at the option of the holders at any time prior to the close of business on the business day immediately preceding February 1, 2022, only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2017, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “Measurement Period”) in which the trading price per $1,000 principal amount of notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. On or after February 1, 2022 until the close of business on the second scheduled trading day immediately preceding the Maturity Date, holders may convert their 2022 Notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. If the Company undergoes a fundamental change prior to the maturity date, holders of the notes may require the Company to repurchase for cash all or any portion of their notes at a repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In addition, if specific corporate events occur prior to the applicable maturity date, the Company will increase the conversion rate for a holder who elects to convert their notes in connection with such a corporate event in certain circumstances. During the three months ended June 30, 2017, the conditions allowing holders of the 2022 Notes to convert have not been met. The 2022 Notes are therefore not convertible during the three or 6 months ended June 30, 2017 and are classified as long-term debt. In accounting for the issuance of the convertible senior notes, the Company separated the 2022 Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar debt instrument that does not have an associated convertible feature. The carrying amount of the equity component representing the Conversion Option was $106 million and was determined by deducting the fair value of the liability component from the par value of the 2022 Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. The excess of the principal amount of the liability component over its carrying amount (the "Debt Discount") is amortized to interest expense over the term of the 2022 Notes expense at an effective interest rate of 6.95% over the contractual term of the 2022 Notes. In accounting for the debt issuance costs of $10.8 million related to the 2022 Notes, the Company allocated the total amount incurred to the liability and equity components of the 2022 Notes based on their relative values. Issuance costs attributable to the liability component were $7.9 million and will be amortized to interest expense using the effective interest method over the contractual terms of the 2022 Notes. Issuance costs attributable to the equity component were $2.9 million and are netted with the equity component in stockholders’ equity. The net carrying amount of the liability component of the 2022 Notes is as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) Principal $ 400,000 $ — Unamortized debt discount (103,508 ) — Unamortized issuance costs (7,728 ) — Net carrying amount $ 288,764 $ — The net carrying amount of the equity component of the 2022 Notes is as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) Debt discount for conversion option $ 106,006 — Issuance costs (2,854 ) — Net carrying amount $ 103,152 $ — Interest expense related to the 2022 Notes is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Contractual interest expense $ 140 $ — $ 140 $ — Amortization of debt discount 2,498 — 2,498 — Amortization of issuance costs 185 — 185 — Total interest expense $ 2,823 $ — $ 2,823 $ — In connection with the offering of the 2022 Notes, the Company entered into convertible note hedge transactions (the “Convertible Note Hedges”) with certain counterparties in which the Company has the option to purchase (subject to adjustment for certain specified events) a total of approximately 4.2 million shares of the Company’s common stock at a price of approximately $94.77 per share. The Convertible Note Hedges will be settled in cash or shares, or any combination thereof, in accordance with the settlement method of the 2022 Notes in excess of the par amount, and are expected to settle upon conversion of the 2022 Notes. The total cost of the Convertible Note Hedges was $78.9 million. In addition, the Company sold warrants to certain bank counterparties whereby the holders of the warrants have the option to purchase initially (subject to adjustment for certain specified events) a total of approximately 4.2 million shares of the Company’s common stock at a price of $115.8 per share. The amount by which the settlement price exceeds the strike price may be settled in shares or cash at the Company’s election. The warrants are expected to settle three business days from each trading day commencing on September 1, 2022 and ending on the 79 th The difference between the Debt Discount and the total cost of the Convertible Note Hedges, and the difference between the calculation of the book and tax allocation of debt issuance costs between the liability and equity components of the 2022 Notes, resulted in a difference between the carrying amount and tax basis of the 2022 Notes. This taxable temporary difference resulted in the Company recognizing a $9.4 million deferred tax liability which was recorded as an adjustment to additional paid-in capital on the consolidated balance sheet. The creation of the deferred tax liability is recognized as a component of equity and represents a source of future taxable income which supports realization of a portion of the income tax benefit associated with the 2017 loss from operations. Therefore, the Company will record a corresponding income tax benefit in its consolidated statement of operations in 2017. In accordance with the guidance for calculating the interim income tax (benefit) provision, $3.5 million of this benefit was recorded as a deferred income tax benefit on the consolidated statement of operations during the six months ended June 30, 2017. The difference of $5.9 million between the interim benefit from income taxes and the deferred tax liability of $9.4 million was recorded as a liability for accrued income taxes on the consolidated balance sheet. This liability will be reversed and the remaining $5.9 million deferred income tax benefit will be recorded during the remainder of 2017 as additional losses from operations are generated. The net equity impact, included in additional paid-in capital, of the above components of the 2022 Notes is as follows: (in thousands) Conversion Option $ 106,006 Purchase of Convertible Note Hedges (78,920 ) Sales of warrants 59,080 Issuance costs (3,054 ) Deferred tax liability (9,399 ) Total $ 73,713

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and Contingencies Contractual Obligations There were no material changes in our commitments under contractual obligations, as disclosed in the Company’s audited consolidated financial statements for the year ended December 31, 2016 and related notes thereto contained in the Company’s Annual Report on Form 10-K, except those disclosed below. In February 2017, the Company signed an amendment related to a leased facility in Cambridge, Massachusetts. The amended lease increased the Company’s future commitments by approximately $6.0 million, which will be payable over approximately nine years. In March, 2017, the Company signed an agreement for a new 19 year property lease in Dublin, Ireland. The lease contains an option to break the lease after 10 years and 6 months. The lease is expected to commence in August 2017 and the Company will pay an aggregate of approximately $10.9 million over the initial 10 year 6 month lease period. Legal Contingencies From time to time, we may become a party to litigation and subject to claims incident to the ordinary course of business, including intellectual property claims, labor and employment claims, and threatened claims, breach of contract claims, tax, and other matters. We currently have no material pending litigation.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Changes in Accumulated Other Comprehensive Loss	8. Changes in Accumulated Other Comprehensive Loss The following table summarizes the changes in accumulated other comprehensive loss, which is reported as a component of stockholders’ equity, for the six months ended June 30, 2017. Cumulative Translation Adjustment Unrealized Loss Investments Total (in thousands) Beginning balance at January 1, 2017 $ (589 ) $ (275 ) $ (864 ) Other comprehensive gain before reclassifications 564 34 598 Amounts reclassified from accumulated other comprehensive income — — — Ending balance at June 30, 2017 $ (25 ) $ (241 ) $ (266 )

Stock-Based Compensation Expens

Stock-Based Compensation Expense	6 Months Ended
	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation Expense	9. Stock-Based Compensation Expense The following two tables show stock-based compensation expense by award type and where the stock-based compensation expense is recorded in the Company’s consolidated statements of operations: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Options $ 1,370 $ 1,446 $ 2,616 $ 2,922 RSUs 11,370 6,717 19,160 11,251 Employee stock purchase plan 266 312 533 532 Total stock-based compensation expense $ 13,006 $ 8,475 $ 22,309 $ 14,705 Effect of stock-based compensation expense on income by line item: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Cost of revenue, subscription $ 178 $ 131 $ 293 $ 224 Cost of revenue, service 666 477 1,115 800 Research and development 3,461 2,272 5,903 4,030 Sales and marketing 5,113 3,469 8,874 5,895 General and administrative 3,588 2,126 6,124 3,756 Total stock-based compensation expense $ 13,006 $ 8,475 $ 22,309 $ 14,705 Capitalized software development costs excluded from stock-based compensation expense is $485 thousand for the three months ended June 30, 2017, $823 thousand for the six months ended June 30, 2017, $313 thousand for the three months ended June 30, 2016 and $506 thousand for the six months ended June 30, 2016.

Segment Information and Geograp

Segment Information and Geographic Data	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information and Geographic Data	10. Segment Information and Geographic Data The Company operates as one operating segment. Operating segments are defined as components of an enterprise for which separate financial information is regularly evaluated by the chief operating decision makers (“CODMs”), which are the Company’s chief executive officer and chief operating officer, in deciding how to allocate resources and assess performance. The Company’s CODMs evaluate the Company’s financial information and resources and assess the performance of these resources on a consolidated basis. Since the Company operates in one operating segment, all required financial segment information can be found in the consolidated financial statements. Revenue and long-lived assets by geographic region, based on the physical location of the operations recording the sale or the asset, are as follows: Revenues by geographical region: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Americas $ 68,274 $ 52,827 $ 132,626 $ 101,605 Europe 16,105 9,948 29,948 18,446 Asia Pacific 4,714 2,199 8,771 3,883 Total $ 89,093 $ 64,974 $ 171,345 $ 123,934 Percentage of revenues generated outside of the Americas 23 % 19 % 23 % 18 % Revenue derived from customers outside the United States (international) was approximately 32% of total revenue in the three months ended June 30, 2017, 31% of total revenue in the six months ended June 30, 2017, 27% of total revenue in the three months ended June 30, 2016, and 26% of total revenue in the six months ended June 30, 2016. Total long-lived assets by geographical region: As of June 30, 2017 As of December 31, 2016 Americas $ 28,817 $ 23,205 Europe 6,197 4,716 Asia Pacific 2,604 2,280 Total long-lived assets $ 37,618 $ 30,201 Percentage of long-lived assets held outside of the Americas 23 % 23 %

Organization and Operations (Po

Organization and Operations (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recent accounting standards not included below are not expected to have a material impact on our consolidated financial position and results of operations. The Company adopted updated guidance related to certain aspects of share-based payments to employees. The guidance requires the recognition of the income tax effects of awards in the income statement when the awards vest or are settled, thus eliminating additional paid-in capital pools. In addition, the Company changed its policy election to account for forfeitures as they occur rather than on an estimated basis. The change in the policy election related to forfeitures resulted in the Company reclassifying $452 thousand from additional paid-in capital to accumulative deficit for the net cumulative-effect adjustment in stock compensation expense related to prior periods. In January 2017, the Financial Accounting Standards Board (“FASB”) issued guidance simplifying the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new standard is effective beginning in January 2020, with early adoption permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In November 2016, the FASB issued guidance related to the presentation of restricted cash within the statement of cash flows. The guidance requires entities to show the changes in cash, cash equivalents, and restricted cash in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash in the statement of cash flows. As of June 30, 2017, we had $5.1 million in restricted cash. The new standard is effective beginning in the first quarter of 2018, with early adoption permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In February 2016, the FASB issued guidance that requires lessees to recognize most leases on their balance sheets but record expenses on their income statements in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The guidance is effective in 2019 with early adoption permitted. The Company is currently evaluating the impact of this guidance on the consolidated financial statements. In May 2014, the FASB issued updated guidance and disclosure requirements for recognizing revenue. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also provides guidance on the recognition of costs related to obtaining customer contracts. In July 2015, the FASB approved the deferral of the new standard's effective date by one year. The new standard now is effective for annual reporting periods beginning January 1, 2018. The FASB will permit companies to adopt the new standard early, but not before the original effective date of January 1, 2017. The Company will adopt the standard on January 1, 2018, and currently anticipates adopting the standard using the modified retrospective method,

Net Loss per Share (Tables)

Net Loss per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Summary of Reconciliation of Denominator Used in Calculation of Basic and Diluted Net Loss Per Share	A reconciliation of the denominator used in the calculation of basic and diluted net loss per share is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Net loss $ (9,521 ) $ (11,064 ) $ (17,596 ) $ (21,218 ) Weighted-average common shares outstanding — basic 36,654 35,023 36,431 34,858 Dilutive effect of share equivalents resulting from stock options, RSUs, ESPP and the Conversion Option of the 2022 Notes — — — — Weighted-average common shares, outstanding — diluted 36,654 35,023 36,431 34,858 Net loss per share, basic and diluted $ (0.26 ) $ (0.32 ) $ (0.48 ) $ (0.61 )
Schedule of Potentially Dilutive Common Stock Equivalents	The following table contains all potentially dilutive common stock equivalents. As of June 30, 2017 2016 (in thousands) Options to purchase common shares 2,501 3,003 RSUs 2,304 2,405 ESPP 5 —

Fair Value of Financial Instr23

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value Measurements of Financial Assets and Liabilities	The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets and liabilities at June 30, 2017 and December 31, 2016. June 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents and investments: Money market funds $ 35,003 $ — $ — $ 35,003 Commercial paper — 7,743 — 7,743 Corporate bonds — 74,399 — 74,399 U.S. government agency obligations — 8,981 — 8,981 U.S. Treasury securities — 367,532 — 367,532 Restricted cash: Certificates of deposit — 5,100 — 5,100 Other assets: Strategic investments — — 600 600 Total $ 35,003 $ 463,755 $ 600 $ 499,358 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents and investments: Money market funds $ 32,260 $ — $ — $ 32,260 Commercial paper — 12,439 — 12,439 Corporate bonds — 66,947 — 66,947 U.S. government agency obligations — 10,980 — 10,980 Total $ 32,260 $ 90,366 $ — $ 122,626
Summary of Composition of Short and Long Term Investments	The following tables summarize the composition of our short- and long-term investments at June 30, 2017 and December 31, 2016. June 30, 2017 Amortized Cost Unrealized Gains Unrealized Losses Aggregate Fair Value (in thousands) Commercial paper $ 7,750 $ — $ (7 ) $ 7,743 Corporate bonds 74,530 7 (138 ) 74,399 U.S. government agency obligations 8,998 - (17 ) 8,981 U.S. Treasury securities 267,569 10 (9 ) 267,570 Total $ 358,847 $ 17 $ (171 ) $ 358,693 December 31, 2016 Amortized Cost Unrealized Gains Unrealized Losses Aggregate Fair Value (in thousands) Commercial paper $ 12,446 $ — $ (7 ) $ 12,439 Corporate bonds 67,126 — (179 ) 66,947 U.S. government agency obligations 10,998 — (18 ) 10,980 Total $ 90,570 $ — $ (204 ) $ 90,366
Summary of Contractual Maturities of Short and Long Term Investments	The contractual maturities of short-term and long-term investments held at June 30, 2017 and December 31, 2016 are as follows: June 30, 2017 December 31, 2016 Amortized Cost Basis Aggregate Fair Value Amortized Cost Basis Aggregate Fair Value (in thousands) (in thousands) Due within one year $ 316,864 $ 316,798 $ 54,694 $ 54,648 Due after 1 year through 2 years 41,983 41,895 35,876 35,718 Total $ 358,847 $ 358,693 $ 90,570 $ 90,366

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment Net	Property and equipment, net consists of the following: June 30, 2017 December 31, 2016 (in thousands) Computer equipment and purchased software $ 3,900 $ 3,237 Employee computer equipment 2,303 1,534 Furniture and fixtures 10,030 8,174 Office equipment 2,460 2,326 Leasehold improvements 29,704 23,693 Equipment under capital lease 2,958 2,412 Internal-use software 2,170 1,301 Construction in progress 1,096 322 Total property and equipment 54,621 42,999 Less accumulated depreciation and amortization (17,003 ) (12,798 ) Property and equipment, net $ 37,618 $ 30,201

Capitalized Software Developm25

Capitalized Software Development Costs (Tables)	6 Months Ended
	Jun. 30, 2017
Research And Development [Abstract]
Summary of Capitalized Software Development Costs, Exclusive of those Recorded within Property and Equipment	Capitalized software development costs, exclusive of those recorded within property and equipment, consisted of the following: June 30, 2017 December 31, 2016 (in thousands) Gross capitalized software development costs $ 29,053 $ 25,152 Accumulated amortization (21,279 ) (18,629 ) Capitalized software development costs, net $ 7,774 $ 6,523
Summary of Capitalized Software Development Costs Including Stock-Based Compensation and Amortization	The following table summarizes software development costs capitalized, stock-based compensation included in capitalized software development costs, and amortization of capitalized software development costs. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Software development costs capitalized $ 1,999 $ 1,278 $ 3,901 $ 2,600 Stock-based compensation included in capitalized software development costs $ 485 $ 313 $ 823 $ 506 Amortization of software development costs $ 1,477 $ 1,486 $ 2,846 $ 2,682

0.25% Convertible Senior Note26

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Instrument [Line Items]
Schedule of Interest Expense	Interest expense related to the 2022 Notes is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Contractual interest expense $ 140 $ — $ 140 $ — Amortization of debt discount 2,498 — 2,498 — Amortization of issuance costs 185 — 185 — Total interest expense $ 2,823 $ — $ 2,823 $ —
Schedule of Net Equity Impact, Included in Additional Paid-in Capital, of the Liability and Equity Components	The net equity impact, included in additional paid-in capital, of the above components of the 2022 Notes is as follows: (in thousands) Conversion Option $ 106,006 Purchase of Convertible Note Hedges (78,920 ) Sales of warrants 59,080 Issuance costs (3,054 ) Deferred tax liability (9,399 ) Total $ 73,713
0.25% Convertible Senior Notes Due 2022 as Liability Component [Member]
Debt Instrument [Line Items]
Schedule of Net Carrying Amount of Notes	The net carrying amount of the liability component of the 2022 Notes is as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) Principal $ 400,000 $ — Unamortized debt discount (103,508 ) — Unamortized issuance costs (7,728 ) — Net carrying amount $ 288,764 $ —
0.25% Convertible Senior Notes Due 2022 as Equity Component [Member]
Debt Instrument [Line Items]
Schedule of Net Carrying Amount of Notes	The net carrying amount of the equity component of the 2022 Notes is as follows: As of June 30, 2017 As of December 31, 2016 (in thousands) Debt discount for conversion option $ 106,006 — Issuance costs (2,854 ) — Net carrying amount $ 103,152 $ —

Changes in Accumulated Other 27

Changes in Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Changes in Accumulated Other Comprehensive Loss	The following table summarizes the changes in accumulated other comprehensive loss, which is reported as a component of stockholders’ equity, for the six months ended June 30, 2017. Cumulative Translation Adjustment Unrealized Loss Investments Total (in thousands) Beginning balance at January 1, 2017 $ (589 ) $ (275 ) $ (864 ) Other comprehensive gain before reclassifications 564 34 598 Amounts reclassified from accumulated other comprehensive income — — — Ending balance at June 30, 2017 $ (25 ) $ (241 ) $ (266 )

Stock-Based Compensation Expe28

Stock-Based Compensation Expense (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Stock-Based Compensation Expense by Award Type	The following two tables show stock-based compensation expense by award type and where the stock-based compensation expense is recorded in the Company’s consolidated statements of operations: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Options $ 1,370 $ 1,446 $ 2,616 $ 2,922 RSUs 11,370 6,717 19,160 11,251 Employee stock purchase plan 266 312 533 532 Total stock-based compensation expense $ 13,006 $ 8,475 $ 22,309 $ 14,705
Effect of Stock-Based Compensation on Income by Line Item	Effect of stock-based compensation expense on income by line item: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (in thousands) (in thousands) Cost of revenue, subscription $ 178 $ 131 $ 293 $ 224 Cost of revenue, service 666 477 1,115 800 Research and development 3,461 2,272 5,903 4,030 Sales and marketing 5,113 3,469 8,874 5,895 General and administrative 3,588 2,126 6,124 3,756 Total stock-based compensation expense $ 13,006 $ 8,475 $ 22,309 $ 14,705

Segment Information and Geogr29

Segment Information and Geographic Data (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Revenues by Geographical Region	Revenues by geographical region: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Americas $ 68,274 $ 52,827 $ 132,626 $ 101,605 Europe 16,105 9,948 29,948 18,446 Asia Pacific 4,714 2,199 8,771 3,883 Total $ 89,093 $ 64,974 $ 171,345 $ 123,934 Percentage of revenues generated outside of the Americas 23 % 19 % 23 % 18 %
Long Lived Assets by Geographical Region	Total long-lived assets by geographical region: As of June 30, 2017 As of December 31, 2016 Americas $ 28,817 $ 23,205 Europe 6,197 4,716 Asia Pacific 2,604 2,280 Total long-lived assets $ 37,618 $ 30,201 Percentage of long-lived assets held outside of the Americas 23 % 23 %

Organization and Operations - A

Organization and Operations - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Increase in valuation allowance	$ 30,400
Reclassification from additional paid in capital to accumulative deficit due to change in policy	452
Restricted cash	$ 5,100	$ 321

Net Loss per Share - Summary of

Net Loss per Share - Summary of Reconciliation of Denominator Used in Calculation of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share Basic And Diluted [Abstract]
Net loss	$ (9,521)	$ (11,064)	$ (17,596)	$ (21,218)
Weighted-average common shares outstanding — basic	36,654	35,023	36,431	34,858
Weighted-average common shares, outstanding — diluted	36,654	35,023	36,431	34,858
Net loss per share, basic and diluted	$ (0.26)	$ (0.32)	$ (0.48)	$ (0.61)

Net Loss per Share - Schedule o

Net Loss per Share - Schedule of Potentially Dilutive Common Stock Equivalents (Detail) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Options to Purchase Common Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	2,501	3,003
RSUs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	2,304	2,405
ESPP [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	5

Net Loss per Share - Additional

Net Loss per Share - Additional Information (Detail)	Jun. 30, 2017$ / shares
0.25% Convertible Senior Notes Due 2022 as Liability Component [Member]
Earnings Per Share Basic [Line Items]
Common stock conversion price	$ 94.77

Fair Value of Financial Instr34

Fair Value of Financial Instruments - Schedule of Fair Value of Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	$ 358,693	$ 90,366
Fair value of financial assets	499,358	122,626
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	35,003	32,260
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	463,755	90,366
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	600
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of cash and cash equivalents	35,003	32,260
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of cash and cash equivalents	35,003	32,260
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of cash and cash equivalents	7,743	12,439
Fair value of short and long term investments	7,743	12,439
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of cash and cash equivalents	7,743	12,439
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	74,399	66,947
Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	74,399	66,947
US Government Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	8,981	10,980
US Government Agency Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	8,981	$ 10,980
US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	367,532
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of short and long term investments	367,532
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of restricted cash	5,100
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of restricted cash	5,100
Strategic Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of other assets	600
Strategic Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of other assets	$ 600

Fair Value of Financial Instr35

Fair Value of Financial Instruments - Additional Information (Detail) $ in Millions	Jun. 30, 2017USD ($)
2022 Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair value of notes	$ 392.9

Fair Value of Financial Instr36

Fair Value of Financial Instruments - Summary of Composition of Short and Long Term Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 358,847	$ 90,570
Unrealized Gains	17
Unrealized Losses	(171)	(204)
Aggregate Fair Value	358,693	90,366
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,750	12,446
Unrealized Losses	(7)	(7)
Aggregate Fair Value	7,743	12,439
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	74,530	67,126
Unrealized Gains	7
Unrealized Losses	(138)	(179)
Aggregate Fair Value	74,399	66,947
US Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8,998	10,998
Unrealized Losses	(17)	(18)
Aggregate Fair Value	8,981	$ 10,980
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	267,569
Unrealized Gains	10
Unrealized Losses	(9)
Aggregate Fair Value	$ 267,570

Fair Value of Financial Instr37

Fair Value of Financial Instruments - Summary of Contractual Maturities of Short and Long Term Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Amortized Cost Basis, Due within one year	$ 316,864	$ 54,694
Amortized Cost Basis, Due after 1 year through 2 years	41,983	35,876
Amortized Cost	358,847	90,570
Aggregate Fair Value, Due within one year	316,798	54,648
Aggregate Fair Value, Due after 1 year through 2 years	41,895	35,718
Aggregate Fair Value, Total	$ 358,693	$ 90,366

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 54,621	$ 42,999
Less accumulated depreciation and amortization	(17,003)	(12,798)
Property and equipment, net	37,618	30,201
Computer Equipment and Purchased Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	3,900	3,237
Employee Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,303	1,534
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	10,030	8,174
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,460	2,326
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	29,704	23,693
Equipment under Capital Lease [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,958	2,412
Internal-Use Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,170	1,301
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 1,096	$ 322

Property and Equipment, Net - A

Property and Equipment, Net - 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 and amortization	$ 2.2	$ 1.5	$ 4.1	$ 2.5

Summary of Capitalized Software

Summary of Capitalized Software Development Costs, Exclusive of those Recorded within Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Capitalized Computer Software Net [Abstract]
Gross capitalized software development costs	$ 29,053	$ 25,152
Accumulated amortization	(21,279)	(18,629)
Capitalized software development costs, net	$ 7,774	$ 6,523

Capitalized Software Developm41

Capitalized Software Development Costs - Additional Information (Detail) - Capitalized Software Development Costs [Member]	6 Months Ended
	Jun. 30, 2017
Minimum [Member]
Capitalized Computer Software [Line Items]
Property and equipment, estimated useful life	2 years
Maximum [Member]
Capitalized Computer Software [Line Items]
Property and equipment, estimated useful life	3 years

Capitalized Software Developm42

Capitalized Software Development Costs - Summary of Capitalized Software Development Costs Including Stock-Based Compensation and Amortization (Detail) - Software Development [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Capitalized Computer Software [Line Items]
Software development costs capitalized	$ 1,999	$ 1,278	$ 3,901	$ 2,600
Stock-based compensation included in capitalized software development costs	485	313	823	506
Amortization of software development costs	$ 1,477	$ 1,486	$ 2,846	$ 2,682

0.25% Convertible Senior Note43

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant - Additional Information (Detail) $ / shares in Units, shares in Millions	1 Months Ended	6 Months Ended
	May 31, 2017USD ($)d$ / shares	Jun. 30, 2017USD ($)$ / sharesshares	Jun. 30, 2016USD ($)
Debt Instrument [Line Items]
Net proceeds from the debt offering		$ 389,245,000
Sales of warrants		58,880,000
Warrants, issuance costs		200,000
Deferred income tax benefit		$ 3,544,000	$ 165,000
0.25% Convertible Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	0.25%
Debt instrument, maturity date		Jun. 1, 2022
Debt instrument, payment terms		The interest rates are fixed at 0.25% per annum and are payable semi-annually in arrears on June 1 and December 1 of each year, commencing on December 1, 2017.
Net proceeds from the debt offering	$ 389,200,000
Principal amount of each convertible note	$ 1,000
Debt instrument, conversion ratio	10.5519
Debt instrument, conversion price per share | $ / shares	$ 94.77
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Description		Repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.
Carrying amount of equity component	$ 106,000,000
Debt instrument, effective interest rate	6.95%
Debt issuance costs	$ 10,800,000
Number of common shares to be repurchased under convertible note hedge transactions with certain counterparties | shares		4.2
Hedging option strike price per common stock | $ / shares		$ 94.77
Cost of convertible note hedge transactions		$ 78,900,000
Warrants expected to settle, description		The warrants are expected to settle three business days from each trading day commencing on September 1, 2022 and ending on the 79th trading day thereafter.
Settlement period of warrants excess price over strike price		3 days
Warrants expected to settle, commencement date		Sep. 1, 2022
Sales of warrants		$ 58,900,000
Warrants, issuance costs		200,000
Convertible notes hedge and warrant transactions cost net		20,000,000
Deferred tax liability adjustment to additional paid-in capital		9,400,000
Deferred income tax benefit		3,500,000
Liability for accrued income taxes		$ 5,900,000
0.25% Convertible Senior Notes Due 2022 [Member] | Common Stock [Member]
Debt Instrument [Line Items]
Warrants holder’s option to purchase number of shares of company’s common stock | shares		4.2
Warrants exercise price per share | $ / shares		$ 115.8
0.25% Convertible Senior Notes Due 2022 [Member] | Liability Component [Member]
Debt Instrument [Line Items]
Debt issuance costs	7,900,000
0.25% Convertible Senior Notes Due 2022 [Member] | Equity Component [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ 2,900,000
0.25% Convertible Senior Notes Due 2022 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, conversion price per share | $ / shares		94.77
Percentage of closing price to trigger debt conversion	130.00%
0.25% Convertible Senior Notes Due 2022 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, conversion price per share | $ / shares		$ 115.83
Percentage of closing price to trigger debt conversion	98.00%
0.25% Convertible Senior Notes Due 2022 [Member] | Scenario 1 [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days | d	20
Debt instrument, convertible, threshold consecutive trading days | d	30
0.25% Convertible Senior Notes Due 2022 [Member] | Scenario Two [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days | d	5
Debt instrument, convertible, threshold consecutive trading days | d	5
0.25% Convertible Senior Notes Due 2022 [Member] | Private Offering [Member]
Debt Instrument [Line Items]
Principal amount of long term debt	$ 350,000,000
0.25% Convertible Senior Notes Due 2022 [Member] | Over-Allotment Options [Member]
Debt Instrument [Line Items]
Principal amount of long term debt	$ 50,000,000

0.25% Convertible Senior Note44

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant - Schedule of Net Carrying Amount of Liability Component (Detail) $ in Thousands	Jun. 30, 2017USD ($)
Debt Instrument [Line Items]
Net carrying amount	$ 288,764
0.25% Convertible Senior Notes Due 2022 as Liability Component [Member]
Debt Instrument [Line Items]
Principal	400,000
Unamortized debt discount	(103,508)
Unamortized issuance costs	(7,728)
Net carrying amount	$ 288,764

0.25% Convertible Senior Note45

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant - Schedule of Net Carrying Amount of Equity Component (Detail) - 0.25% Convertible Senior Notes Due 2022 as Equity Component [Member] $ in Thousands	Jun. 30, 2017USD ($)
Debt Instrument [Line Items]
Debt discount for conversion option	$ 106,006
Issuance costs	(2,854)
Net carrying amount	$ 103,152

0.25% Convertible Senior Note46

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant - Schedule of Interest Expense (Detail) - 0.25% Convertible Senior Notes Due 2022 [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Contractual interest expense	$ 140	$ 140
Amortization of debt discount	2,498	2,498
Amortization of issuance costs	185	185
Total interest expense	$ 2,823	$ 2,823

0.25% Convertible Senior Note47

0.25% Convertible Senior Notes, Convertible Note Hedge and Warrant - Schedule of Net Equity Impact, Included in Additional Paid-in Capital, of the Liability and Equity Components (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Debt Instrument [Line Items]
Total	$ 73,713
0.25% Convertible Senior Notes Due 2022 as Net Equity Impact [Member]
Debt Instrument [Line Items]
Conversion Option	106,006
Purchase of Convertible Note Hedges	(78,920)
Sales of warrants	59,080
Issuance costs	(3,054)
Deferred tax liability	(9,399)
Total	$ 73,713

Commitments and Contingencies-

Commitments and Contingencies- Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended
	Mar. 31, 2017	Feb. 28, 2017
Operating And Capital Leased Assets [Line Items]
Increase in future lease commitments		$ 6
Purchase commitment, payable period		9 years
Lease Commencement, August 2017 [Member]
Operating And Capital Leased Assets [Line Items]
Lease agreement period	19 years
Renewal term	10 years 6 months
Lease commencement date	2017-08
Rent payable	$ 10.9

Changes in Accumulated Other 49

Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance, Amount	$ 118,700
Other comprehensive gain before reclassifications	598
Ending Balance, Amount	203,703
Cumulative Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance, Amount	(589)
Other comprehensive gain before reclassifications	564
Ending Balance, Amount	(25)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance, Amount	(275)
Other comprehensive gain before reclassifications	34
Ending Balance, Amount	(241)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance, Amount	(864)
Ending Balance, Amount	$ (266)

Stock-Based Compensation Expe50

Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense by Award Type (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, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 13,006	$ 8,475	$ 22,309	$ 14,705
Common Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,370	1,446	2,616	2,922
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	11,370	6,717	19,160	11,251
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 266	$ 312	$ 533	$ 532

Stock-Based Compensation Expe51

Stock-Based Compensation Expense - Effect of Stock-Based Compensation on Income by Line Item (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, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 13,006	$ 8,475	$ 22,309	$ 14,705
Cost of Revenue, Subscription [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	178	131	293	224
Cost of Revenue, Service [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	666	477	1,115	800
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	3,461	2,272	5,903	4,030
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	5,113	3,469	8,874	5,895
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 3,588	$ 2,126	$ 6,124	$ 3,756

Stock-Based Compensation Expe52

Stock-Based Compensation Expense - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Software Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Capitalized software development costs excluded from stock based compensation	$ 485	$ 313	$ 823	$ 506

Segment Information and Geogr53

Segment Information and Geographic Data - 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 segment			1
Revenue [Member] | Outside Of United States [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	32.00%	27.00%	31.00%	26.00%

Segment Information and Geogr54

Segment Information and Geographic Data - Revenues by Geographical Region (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total Revenues	$ 89,093	$ 64,974	$ 171,345	$ 123,934
Americas [Member]
Segment Reporting Information [Line Items]
Total Revenues	68,274	52,827	132,626	101,605
Europe [Member]
Segment Reporting Information [Line Items]
Total Revenues	16,105	9,948	29,948	18,446
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total Revenues	$ 4,714	$ 2,199	$ 8,771	$ 3,883
Revenue [Member] | Outside Of Americas [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage of revenues generated outside of the Americas	23.00%	19.00%	23.00%	18.00%

Segment Information and Geogr55

Segment Information and Geographic Data - Long Lived Assets by Geographical Region (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total long lived assets	$ 37,618	$ 30,201
Americas [Member]
Segment Reporting Information [Line Items]
Total long lived assets	28,817	23,205
Europe [Member]
Segment Reporting Information [Line Items]
Total long lived assets	6,197	4,716
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total long lived assets	$ 2,604	$ 2,280
Outside Of Americas [Member] | Assets Total [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage of long lived assets held outside of the Americas	23.00%	23.00%