Alteryx Inc - Ordinary Shares (AYX) 10-Q 31 Oct 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 24, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-38034
Entity Registrant Name	Alteryx, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-0673106
Entity Address, Address Line One	3345 Michelson Drive,
Entity Address, Address Line Two	Suite 400,
Entity Address, City or Town	Irvine,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92612
City Area Code	888
Local Phone Number	836-4274
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	AYX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001689923
Current Fiscal Year End Date	--12-31
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		51,819,830
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		13,256,299

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenue	$ 103,397	$ 62,589	$ 261,460	$ 164,420
Cost of revenue	9,645	5,810	26,940	16,083
Gross profit	93,752	56,779	234,520	148,337
Operating expenses:
Research and development	17,755	10,531	48,208	31,480
Sales and marketing	43,779	24,934	130,414	74,552
General and administrative	20,282	11,920	56,652	33,653
Total operating expenses	81,816	47,385	235,274	139,685
Income (loss) from operations	11,936	9,394	(754)	8,652
Interest expense	(6,477)	(2,971)	(12,561)	(4,371)
Other income, net	145	1,755	3,821	1,691
Loss on induced conversion and debt extinguishment	(20,507)	0	(20,507)	0
Income (loss) before benefit of income taxes	(14,903)	8,178	(30,001)	5,972
Benefit of income taxes	(8,663)	(2,643)	(26,456)	(5,507)
Net income (loss)	$ (6,240)	$ 10,821	$ (3,545)	$ 11,479
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ (0.10)	$ 0.18	$ (0.06)	$ 0.19
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ (0.10)	$ 0.17	$ (0.06)	$ 0.18
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic	63,966	61,103	62,842	60,618
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, diluted	63,966	65,559	62,842	64,301
Other comprehensive income (loss), net of tax:
Net unrealized holding income (loss) on investments, net of tax	$ (2)	$ (70)	$ 912	$ (192)
Foreign currency translation adjustments	(133)	15	49	(53)
Other comprehensive income (loss), net of tax	(135)	(55)	961	(245)
Total comprehensive income (loss)	$ (6,375)	$ 10,766	$ (2,584)	$ 11,234

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 642,450	$ 89,974
Short-term investments	231,976	239,718
Accounts receivable, net of allowance for doubtful accounts and sales reserves of $2,465 and $2,297 as of September 30, 2019 and December 31, 2018, respectively	67,704	94,922
Prepaid expenses and other current assets	53,361	37,199
Total current assets	995,491	461,813
Property and equipment, net	15,229	11,729
Operating lease right-of-use assets	34,325
Long-term investments	112,060	96,551
Goodwill	18,836	9,494
Intangible assets, net	15,282	7,491
Other assets	48,086	31,089
Total assets	1,239,309	618,167
Current liabilities:
Accounts payable	11,200	5,028
Accrued payroll and payroll related liabilities	26,460	24,659
Accrued expenses and other current liabilities	19,495	10,878
Deferred revenue	66,561	84,015
Convertible senior notes, net	67,079	0
Total current liabilities	190,795	124,580
Convertible senior notes, net	623,720	173,647
Deferred revenue	2,026	2,130
Operating lease liabilities	30,307
Other liabilities	4,183	4,345
Deferred income tax, net	1,543	11,647
Total liabilities	852,574	316,349
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000 shares authorized as of September 30, 2019 and December 31, 2018, respectively; no shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively	0	0
Common stock, $0.0001 par value: 500,000 Class A shares authorized, 51,791 and 37,832 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively; 500,000 Class B shares authorized, 13,256 and 23,748 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively	7	6
Additional paid-in capital	402,791	315,291
Accumulated deficit	(16,453)	(12,908)
Accumulated other comprehensive income (loss)	390	(571)
Total stockholders’ equity	386,735	301,818
Total liabilities and stockholders’ equity	$ 1,239,309	$ 618,167

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Allowance for doubtful accounts and sales reserves	$ 2,465	$ 2,297
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock
Common stock par value per share (in dollars per share)	$ 0.0001	$ 0.0001
Common stock shares authorized (in shares)	500,000,000	500,000,000
Common Stock shares issued (in shares)	51,791,000	37,832,000
Common stock shares outstanding (in shares)	51,791,000	37,832,000
Class B Common Stock
Common stock par value per share (in dollars per share)	$ 0.0001	$ 0.0001
Common stock shares authorized (in shares)	500,000,000	500,000,000
Common Stock shares issued (in shares)	13,256,000	23,748,000
Common stock shares outstanding (in shares)	13,256,000	23,748,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Gain (Loss)
Beginning balance (in shares) at Dec. 31, 2017		59,635
Beginning Balance at Dec. 31, 2017	$ 153,504	$ 5	$ 257,399	$ (103,546)	$ (354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		934
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	4,973	$ 1	4,972
Stock-based compensation	3,789		3,789
Equity settled contingent consideration (in shares)		19
Equity-settled contingent consideration	656		656
Cumulative translation adjustment	(6)				(6)
Unrealized gain (loss) on investments, net of tax	(167)				(167)
Net income (loss)	4,897			4,897
Ending balance (in shares) at Mar. 31, 2018		60,588
Ending Balance at Mar. 31, 2018	230,405	$ 6	266,957	(36,031)	(527)
Beginning balance (in shares) at Dec. 31, 2017		59,635
Beginning Balance at Dec. 31, 2017	153,504	$ 5	257,399	(103,546)	(354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative translation adjustment	(53)
Unrealized gain (loss) on investments, net of tax	(192)
Net income (loss)	11,479
Ending balance (in shares) at Sep. 30, 2018		61,373
Ending Balance at Sep. 30, 2018	281,591	$ 6	311,633	(29,449)	(599)
Beginning balance (in shares) at Mar. 31, 2018		60,588
Beginning Balance at Mar. 31, 2018	230,405	$ 6	266,957	(36,031)	(527)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		263
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	1,802	$ 0	1,802
Stock-based compensation	3,894		3,894
Equity component of convertible senior notes, net of issuance costs and tax	43,569		43,569
Purchase of capped calls, net of tax	(14,545)		(14,545)
Cumulative translation adjustment	(62)				(62)
Unrealized gain (loss) on investments, net of tax	45				45
Net income (loss)	(4,239)			(4,239)
Ending balance (in shares) at Jun. 30, 2018		60,851
Ending Balance at Jun. 30, 2018	260,869	$ 6	301,677	(40,270)	(544)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		522
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	5,574	$ 0	5,574
Stock-based compensation	4,382		4,382
Cumulative translation adjustment	15				15
Unrealized gain (loss) on investments, net of tax	(70)				(70)
Net income (loss)	10,821			10,821
Ending balance (in shares) at Sep. 30, 2018		61,373
Ending Balance at Sep. 30, 2018	281,591	$ 6	311,633	(29,449)	(599)
Beginning balance (in shares) at Dec. 31, 2018		61,579
Beginning Balance at Dec. 31, 2018	301,818	$ 6	315,291	(12,908)	(571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Receipt of Section 16(b) disgorgement, net of tax effect	3,743		3,743
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		863
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	8,587		8,587
Stock-based compensation	5,335		5,335
Equity settled contingent consideration (in shares)		21
Equity-settled contingent consideration	750		750
Cumulative translation adjustment	(1,011)				(1,011)
Unrealized gain (loss) on investments, net of tax	702				702
Net income (loss)	5,914			5,914
Ending balance (in shares) at Mar. 31, 2019		62,463
Ending Balance at Mar. 31, 2019	325,838	$ 6	333,706	(6,994)	(880)
Beginning balance (in shares) at Dec. 31, 2018		61,579
Beginning Balance at Dec. 31, 2018	301,818	$ 6	315,291	(12,908)	(571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative translation adjustment	49
Unrealized gain (loss) on investments, net of tax	912
Net income (loss)	(3,545)
Ending balance (in shares) at Sep. 30, 2019		65,047
Ending Balance at Sep. 30, 2019	386,735	$ 7	402,791	(16,453)	390
Beginning balance (in shares) at Mar. 31, 2019		62,463
Beginning Balance at Mar. 31, 2019	325,838	$ 6	333,706	(6,994)	(880)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		309
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	(620)		(620)
Stock-based compensation	8,024		8,024
Cumulative translation adjustment	1,193				1,193
Unrealized gain (loss) on investments, net of tax	212				212
Net income (loss)	(3,219)			(3,219)
Ending balance (in shares) at Jun. 30, 2019		62,772
Ending Balance at Jun. 30, 2019	331,428	$ 6	341,110	(10,213)	525
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units (in shares)		370
Shares issued pursuant to stock awards, net of tax withholdings related to vesting of restricted stock units	3,703		3,703
Shares issued pursuant to debt extinguishment on convertible senior notes, net of capped calls exercised (in shares)		1,905
Induced conversion on 2023 convertible senior notes, net of capped calls extinguished and tax	(7,904)	$ 1	(7,905)
Stock-based compensation	8,836		8,836
Equity component of convertible senior notes, net of issuance costs and tax	122,822		122,822
Purchase of capped calls, net of tax	(65,775)		(65,775)
Cumulative translation adjustment	(133)				(133)
Unrealized gain (loss) on investments, net of tax	(2)				(2)
Net income (loss)	(6,240)			(6,240)
Ending balance (in shares) at Sep. 30, 2019		65,047
Ending Balance at Sep. 30, 2019	$ 386,735	$ 7	$ 402,791	$ (16,453)	$ 390

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (3,545)	$ 11,479
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	3,328	3,087
Non-cash operating lease cost	3,538	0
Stock-based compensation	22,195	12,065
Amortization of debt discount and issuance costs	10,949	3,933
Deferred income taxes	(27,267)	1,552
Loss on induced conversion and debt extinguishment	(20,507)	0
Other non-cash operating activities, net	1,143	478
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable	26,698	(1,303)
Deferred commissions	(4,882)	(6,114)
Prepaid expenses, other current assets, and other assets	(28,949)	(18,875)
Accounts payable	5,165	5,987
Accrued payroll and payroll related liabilities	1,703	1,697
Accrued expenses, other current liabilities, operating lease liabilities, and other liabilities	441	(3,350)
Deferred revenue	(17,538)	1,029
Net cash provided by operating activities	13,486	11,665
Cash flows from investing activities:
Purchases of property and equipment	(6,160)	(5,929)
Cash paid in business acquisitions, net of cash acquired	(16,604)	(3,537)
Purchases of investments	(235,973)	(342,851)
Maturities of investments	231,794	88,919
Net cash used in investing activities	(26,943)	(263,398)
Cash flows from financing activities:
Proceeds from issuance of convertible senior notes, net of issuance costs	783,946	224,708
Principal payments on 2023 convertible senior notes	(145,241)	0
Purchase of capped calls	(87,360)	(19,113)
Proceeds from receipt of Section 16(b) disgorgement	4,918	0
Proceeds from exercise of stock options	18,065	12,496
Minimum tax withholding paid on behalf of employees for restricted stock units	(6,395)	(149)
Other financing activity	(1,305)	(495)
Net cash provided by financing activities	566,628	217,447
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(323)	(106)
Net increase (decrease) in cash, cash equivalents and restricted cash	552,848	(34,392)
Cash, cash equivalents and restricted cash—beginning of period	90,961	119,916
Cash, cash equivalents and restricted cash—end of period	643,809	85,524
Supplemental disclosure of cash flow information:
Cash paid for interest	718	0
Cash paid for income taxes	1,280	1,759
Supplemental disclosure of noncash investing and financing activities:
Property and equipment recorded in accounts payable and accrued expenses and other current liabilities	1,097	614
Right-of-use assets obtained in exchange for new operating lease liabilities	12,909
Consideration for business acquisition included in accrued expenses and other current liabilities and other liabilities	3,000	1,200
Contingent consideration settled through issuance of common stock	750	656
Debt issuance costs recorded in accounts payable and accrued expenses and other current liabilities	$ 657	$ 462

Business

Business	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business	Business Our Company Alteryx, Inc. and its subsidiaries, or we, our, or us, are improving business through data science and analytics by enabling analytic producers, regardless of technical acumen, to quickly and easily transform data into actionable insights and deliver improved data-driven business outcomes. Every day, our users leverage our end-to-end analytic platform to quickly and easily discover, access, prepare, and analyze data from a multitude of sources, then deploy and share analytics at scale. The ease-of-use, speed, and sophistication that our platform provides is enhanced through intuitive and highly repeatable visual workflows. Basis of Presentation Our unaudited interim condensed consolidated financial statements are presented in accordance with accounting standards generally accepted in the United States of America, or U.S. GAAP, for interim financial information. Certain information and disclosures normally included in consolidated financial statements presented in accordance with U.S. GAAP have been condensed or omitted. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes included in our Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission, or SEC, on March 1, 2019. The unaudited interim condensed consolidated financial statements have been prepared on a basis consistent with that used to prepare the audited annual consolidated financial statements and reflect all adjustments which are, in the opinion of our management, of a normal recurring nature and necessary for a fair statement of the condensed consolidated financial statements. All intercompany accounts and transactions have been eliminated in consolidation. We adopted Accounting Standards Codification, Revenue from Contracts with Customers , or ASC 606, effective January 1, 2018 on a modified retrospective basis during the fourth quarter of 2018 for our annual reporting period for the year ended December 31, 2018. As a result, the quarterly financial results for the three and nine months ended September 30, 2018 have been recast to reflect the adoption of ASC 606. The operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results expected for the full year ending December 31, 2019 .

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies There have been no changes to our accounting policies disclosed in our audited consolidated financial statements and the related notes for the year ended December 31, 2018 other than, during the three months ended March 31, 2019, we adopted new accounting guidance related to leases. See Leases and Recently Adopted Accounting Pronouncements below and Note 9, Leases , for additional information. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates and assumptions. On an ongoing basis, our management evaluates estimates and assumptions based on historical data and experience, as well as various other factors that our management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities. Operating Segments Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, or CODM, who is our chief executive officer, in deciding how to allocate resources and assess our financial and operational performance. Our CODM evaluates our financial information and resources and assesses the performance of these resources on a consolidated and aggregated basis. As a result, we have determined that our business operates in a single operating segment. Leases Through December 31, 2018, we recognized rent expense related to operating leases on a straight-line basis over the lease term and, accordingly, recorded the difference between rent payments and rent expense as a deferred rent liability. Effective January 1, 2019, we adopted Accounting Standards Update, or ASU, 2016-02, Leases , or ASC 842. See Recently Adopted Accounting Pronouncements below. Under ASC 842, we determine if an arrangement is a lease at contract inception. Operating leases are included in operating lease right-of-use assets, other current liabilities and operating lease liabilities in our condensed consolidated balance sheets. Operating lease charges are recorded in operating expenses in our condensed consolidated statements of operations and comprehensive income (loss). Operating lease right-of-use assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. We do not separate lease and non-lease components for all underlying asset classes. As most of our leases do not provide a readily determinable implicit rate, we estimate our incremental borrowing rate to discount the lease payments based on information available at lease commencement. We determine our incremental borrowing rate for each lease based primarily on the lease term and the economic environment of the applicable country or region. The operating lease right-of-use asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The lease term includes options to extend or terminate when we are reasonably certain the option will be exercised. In general, we are not reasonably certain to exercise such options. We recognize lease expense for minimum lease payments on a straight-line basis over the lease term, while variable lease payments, such as common area maintenance, are recognized as incurred. We elected the practical expedient to not recognize operating lease right-of-use assets and operating lease liabilities that arise from short-term leases (i.e., leases with a term of 12 months or less). Recently Adopted Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, or FASB, issued ASU 2016-02, codified as ASC 842, which requires lessees to record the assets and liabilities arising from all leases, with the exception of short-term leases, in the statement of financial position. Under ASC 842, lessees will recognize a liability for lease payments and a right-of-use asset. This guidance retains the distinction between finance leases and operating leases and the classification criteria remain similar. For financing leases, a lessee will recognize the interest on a lease liability separate from amortization of the right-of-use asset. In addition, repayments of principal will be presented within financing activities, and interest payments will be presented within operating activities in the statement of cash flows. For operating leases, a lessee will recognize a single lease cost on a straight-line basis and classify all cash payments within operating activities in the statement of cash flows. We adopted the new lease accounting standard effective January 1, 2019 using the optional transition method described in ASU 2018-11, Leases – Targeted Improvements , which was issued in July 2018. Under the optional transition method, we recognized the cumulative effect of initially applying the guidance as an adjustment to the operating lease right-of-use assets and operating lease liabilities on our condensed consolidated balance sheet on January 1, 2019 in the amount of $24.8 million without retrospective application to comparative periods. The adoption of ASC 842 did not have an impact on retained earnings on our condensed consolidated balance sheet as of January 1, 2019 and is not expected to have a material impact on our condensed consolidated statements of operations and comprehensive income (loss). We elected the package of practical expedients permitted under the transition guidance within the new standard which allowed us to carry forward our historical assessments of whether contracts are or contain leases, lease classification and initial direct costs. See Note 9, Leases , for additional details. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . The new standard amends the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology. As a result, we will be required to use a forward-looking expected credit loss model for accounts receivables and other commitments to extend credit. This pronouncement is effective for reporting periods beginning after December 15, 2019. We are evaluating the potential impact of this guidance on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing costs incurred to develop or obtain internal-use software. This guidance will be effective for us for annual reporting periods beginning after December 15, 2019 and for interim periods within those annual periods and can be applied either retrospectively or prospectively to all implementation costs after the date of adoption. Early adoption is permitted. We currently plan to adopt this new accounting standard prospectively. As a

Revenue

Revenue	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Disaggregation of Revenue The disaggregation of revenue by region, revenue by type of performance obligation and cost of revenue by type of performance obligation, and the timing of revenue recognition, was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue by region: United States $ 74,710 $ 43,176 $ 185,388 $ 114,615 International 28,687 19,413 76,072 49,805 Total $ 103,397 $ 62,589 $ 261,460 $ 164,420 Revenue by type of performance obligation: Subscription-based software license $ 54,332 $ 28,822 $ 125,981 $ 72,781 PCS and services 49,065 33,767 135,479 91,639 Total $ 103,397 $ 62,589 $ 261,460 $ 164,420 Cost of revenue by type of performance obligation: Subscription-based software license $ 1,082 $ 521 $ 2,930 $ 1,647 PCS and services 8,563 5,289 24,010 14,436 Total $ 9,645 $ 5,810 $ 26,940 $ 16,083 Revenue attributable to the United Kingdom comprised 10.7% and 10.4% of total revenue for the three and nine months ended September 30, 2018 , respectively, and 12.3% and 10.5% of total revenue for the three and nine months ended September 30, 2019 , respectively. Other than the United Kingdom, no other countries outside the United States comprised more than 10% of revenue for any of the periods presented. Our operations outside the United States include sales offices in Australia, Canada, France, Germany, Japan, Singapore, the United Arab Emirates and the United Kingdom, and a research and development center in Ukraine and the Czech Republic. Revenue by location is determined by the billing address of the customer. Revenue recognized on our subscription-based software licenses is recognized at a point in time when the platform is first made available to the customer, or the beginning of the subscription term, if later. Revenue recognized related to post-contract support, or PCS, service, and hosted services is recognized ratably over the subscription term, with the exception of professional services related to training services. Revenue related to professional services is recognized at a point in time as the services are performed, and represents 5% or less of total revenue for all periods presented. Contract Assets and Contract Liabilities Timing may differ between the satisfaction of performance obligations and the invoicing and collection of amounts related to our contracts with customers. Contract assets primarily relate to unbilled amounts for contracts with customers for which the amount of revenue recognized exceeds the amount billed to the customer. Contract assets are transferred to accounts receivable when the right to invoice becomes unconditional. Contract liabilities, or deferred revenue, are recorded for amounts that are collected in advance of the satisfaction of performance obligations. These liabilities are classified as current and non-current deferred revenue. As of September 30, 2019 , our contract assets are expected to be transferred to receivables within the next 12 to 24 months and, with respect to these contract assets, $21.1 million is included in prepaid expenses and other current assets and $29.3 million is included in other assets on our condensed consolidated balance sheet. As of December 31, 2018, we had contract assets of $11.2 million included in prepaid expenses and other current assets and $16.5 million included in other assets on our consolidated balance sheet. There were no impairments of contract assets during the three and nine months ended September 30, 2019 . During the nine months ended September 30, 2019 , we recognized $75.4 million of revenue related to amounts that were included in deferred revenue as of January 1, 2019. Assets Recognized from the Costs to Obtain our Contracts with Customers We recognize an asset for the incremental costs of obtaining a contract with a customer if we expect the benefit of those costs to be longer than one year. We amortize these deferred costs proportionate with related revenues over the benefit period. A summary of the activity impacting our deferred contract costs during the nine months ended September 30, 2019 is presented below (in thousands): Balances at December 31, 2018 $ 22,391 Additional contract costs deferred 23,922 Amortization of deferred contract costs (19,467 ) Balances at September 30, 2019 $ 26,846 As of September 30, 2019 , $ 11.9 million of our deferred contract costs are expected to be amortized within the next 12 months and therefore are included in other current assets. The remaining amount of our deferred contract costs are included in other long-term assets. There were no impairments of assets related to deferred contract costs during the nine months ended September 30, 2019 . There were no assets recognized related to the costs to fulfill contracts during the nine months ended September 30, 2019 as these costs were not material. Remaining Performance Obligations As of September 30, 2019 , we had an aggregate transaction price of $ 271.8 million, allocated to unsatisfied performance obligations related primarily to PCS, cloud-based offerings, and subscriptions to third-party syndicated data. We expect to recognize $ 236.3 million as revenue over the next 24 months, with the remaining amount recognized thereafter.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Business Combinations	Business Combinations On April 4, 2019, we acquired 100% of the outstanding equity of ClearStory Data Inc., a Delaware corporation, or ClearStory Data, pursuant to an Agreement and Plan of Merger, or the Merger Agreement, dated as of March 28, 2019. The acquisition was made to augment our research and development team and acquire certain developed technology. The aggregate consideration payable in exchange for all of the outstanding equity interests of ClearStory Data was $19.6 million in cash, subject to customary adjustments set forth in the Merger Agreement. The acquisition of ClearStory Data included $3.0 million of cash consideration held back for customary indemnification matters for a period of 18 months following the acquisition date, which is included in other liabilities on our condensed consolidated balance sheets as of September 30, 2019 . We incurred $1.2 million of acquisition-related costs, which are included in general and administrative expense in the condensed consolidated statements of operations and comprehensive income (loss) for the nine months ended September 30, 2019 . In connection with the acquisition, we entered into employment agreements with certain employees from ClearStory Data, which include up to $6.0 million in aggregate cash payments based on the achievement of certain milestones over a period of 24 months . As the consideration is subject to the continued employment of the employees, it was excluded from the purchase consideration, and will be recognized as post-acquisition compensation. The condensed consolidated financial statements include the results of operations of ClearStory Data commencing as of the acquisition date. The purchase consideration for the acquisition of $19.6 million consisted of $10.7 million in completed technology, $9.5 million of goodwill, which is tax deductible, and $0.6 million of net liabilities assumed. Goodwill represents the excess of the purchase price consideration over the fair value of the underlying intangible assets and net liabilities assumed. We believe the amount of goodwill resulting from the acquisition is primarily attributable to expected synergies from an assembled workforce, increased development capabilities, offerings to customers, and enhanced opportunities for growth and innovation. We determined the fair value of the developed technology acquired using the replacement cost method which uses estimated costs to recreate the technology. This model utilizes certain unobservable inputs classified as Level 3 measurements as defined by ASC 820, Fair Value Measurements and Disclosures . Key inputs utilized in the models include a discount rate of 20% and estimated costs to recreate the technology. Based on the valuation model, we determined the fair value of the developed technology to be $10.7 million with an amortization period of 4.0 years . Pro forma information and revenue and operating results of ClearStory Data have not been presented as the impact is not material to our condensed consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Instruments Measured at Fair Value on a Recurring Basis. The following tables present our cash and cash equivalents’ and investments’ costs, gross unrealized gains (losses), and fair value by major security type recorded as cash and cash equivalents or short-term or long-term investments as of September 30, 2019 and December 31, 2018 (in thousands): As of September 30, 2019 Cost Unrealized Gains Fair Value Cash and Cash Equivalents Short-term Investments Long-term Investments Cash $ 630,790 $ — $ 630,790 $ 630,790 $ — $ — Level 1: Money market funds 11,660 — 11,660 11,660 — — Subtotal $ 11,660 $ — $ 11,660 $ 11,660 $ — $ — Level 2: Commercial paper 63,347 — 63,347 — 63,347 — Certificates of deposit — — — — — — U.S. Treasury and agency bonds 195,353 251 195,604 — 131,202 64,402 Corporate bonds 84,468 617 85,085 — 37,427 47,658 Subtotal $ 343,168 $ 868 $ 344,036 $ — $ 231,976 $ 112,060 Level 3: — — — — — — Total $ 985,618 $ 868 $ 986,486 $ 642,450 $ 231,976 $ 112,060 As of December 31, 2018 Cost Unrealized Losses Fair Value Cash and Short-term Investments Long-term Investments Cash $ 78,194 $ — $ 78,194 $ 78,194 $ — $ — Level 1: Money market funds 11,780 — 11,780 11,780 — — Subtotal $ 11,780 $ — $ 11,780 $ 11,780 $ — $ — Level 2: Commercial paper 1,313 — 1,313 — 1,313 — Certificates of deposit 6,101 — 6,101 — 5,351 750 U.S. Treasury and agency bonds 220,136 (139 ) 219,997 — 158,204 61,793 Corporate bonds 108,968 (110 ) 108,858 — 74,850 34,008 Subtotal $ 336,518 $ (249 ) $ 336,269 $ — $ 239,718 $ 96,551 Level 3: — — — — — — Total $ 426,492 $ (249 ) $ 426,243 $ 89,974 $ 239,718 $ 96,551 There were no transfers between Level 1, Level 2, or Level 3 securities during the nine months ended September 30, 2019 . Gross unrealized losses of less than $ 0.1 million as of September 30, 2019 were due to changes in market rates and are temporary in nature. All long-term investments had maturities of between one and two years in duration as of September 30, 2019 . Cash and cash equivalents, restricted cash, and investments as of September 30, 2019 and December 31, 2018 held domestically were approximately $ 978.9 million and $ 417.9 million, respectively. Contingent Consideration. The following table presents a reconciliation of the beginning and ending balances of acquisition-related accrued contingent consideration using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2019 and 2018 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 318 $ 1,974 $ 2,143 $ 975 Obligations assumed — — — 1,200 Change in fair value — — (75 ) 455 Settlements — — (1,750 ) (656 ) Ending balance $ 318 $ 1,974 $ 318 $ 1,974 Upon the achievement of certain milestones in connection with our acquisition of Semanta, s.r.o., or Semanta, we released 11,250 shares of Class A common stock with a fair value of $0.8 million to the former shareholders of Semanta in the nine months ended September 30, 2019 . In addition, upon completion of the indemnification period in the nine months ended September 30, 2019 , we released 10,205 shares of Class A common stock to the former shareholders of Semanta that had previously been earned, but were held back in accordance with the terms of the acquisition agreement. We also paid $1.0 million to the former shareholder of Alteryx ANZ Pty Limited upon the achievement of certain milestones during the nine months ended September 30, 2019 . Instruments Not Recorded at Fair Value on a Recurring Basis. As of September 30, 2019 , the fair value of our Notes (as defined in Note 7, Convertible Senior Notes ) was $1.0 billion . The carrying amounts of our cash, accounts receivable, prepaid expenses and other current assets, accounts payable, and accrued liabilities approximate their current fair value because of their nature and relatively short maturity dates or durations.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The change in carrying amount of goodwill for the nine months ended September 30, 2019 was as follows (in thousands): Goodwill as of December 31, 2018 $ 9,494 Goodwill recorded in connection with acquisition 9,453 Effects of foreign currency translation (111 ) Goodwill as of September 30, 2019 $ 18,836 Intangible assets consisted of the following (in thousands, except years): As of September 30, 2019 Weighted- Average Useful Life in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Customer relationships 7.0 $ 1,448 $ (335 ) $ 1,113 Completed technology 4.8 19,855 (5,686 ) 14,169 $ 21,303 $ (6,021 ) $ 15,282 As of December 31, 2018 Weighted- Gross Carrying Value Accumulated Amortization Net Carrying Value Customer relationships 6.9 $ 1,554 $ (221 ) $ 1,333 Completed technology 5.7 9,180 (3,022 ) 6,158 $ 10,734 $ (3,243 ) $ 7,491 We classified intangible asset amortization expense in the accompanying condensed consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Cost of revenue $ 1,128 $ 456 $ 2,670 $ 1,353 Sales and marketing 53 62 168 159 Total $ 1,181 $ 518 $ 2,838 $ 1,512 The following table presents our estimates of remaining amortization expense for finite-lived intangible assets at September 30, 2019 (in thousands): Remainder of 2019 $ 1,181 2020 4,387 2021 4,169 2022 3,624 2023 1,272 Thereafter 649 Total amortization expense $ 15,282

Convertible Senior Notes

Convertible Senior Notes	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Convertible Senior Notes	Convertible Senior Notes The following table presents details of our convertible senior notes, which are further discussed below (original principal in thousands): Month Issued Maturity Date Original Principal (including over-allotment) Coupon Interest Rate Effective Interest Rate Conversion Rate Initial Conversion Price 2023 Notes May 2018 June 1, 2023 $ 230,000 0.5 % 7.00 % $ 22.5572 $ 44.33 2024 Notes August 2019 August 1, 2024 $ 400,000 0.5 % 4.96 % $ 5.2809 $ 189.36 2026 Notes August 2019 August 1, 2026 $ 400,000 1.0 % 5.41 % $ 5.2809 $ 189.36 2023 Notes In May and June 2018, we sold $230.0 million aggregate principal amount of our 0.50% Convertible Senior Notes due 2023, or the 2023 Notes, including the initial purchasers’ exercise in full of their option to purchase an additional $30.0 million of the 2023 Notes, in a private offering to qualified institutional buyers pursuant to Rule 144A promulgated under the Securities Act of 1933, as amended, or the Act. The 2023 Notes are our senior, unsecured obligations, and interest is payable semi-annually in arrears on June 1 and December 1 of each year beginning December 1, 2018. Prior to the close of business on the business day immediately preceding March 1, 2023, or the 2023 Conversion Date, the 2023 Notes are convertible at the option of holders only upon satisfaction of certain conditions and during certain periods, and thereafter, at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. The conversion rate is subject to customary adjustments for certain events as described in the indenture between us and U.S. Bank National Association, as trustee, or the 2023 Notes Indenture. Upon conversion, the 2023 Notes may be settled in shares of our Class A common stock, cash or a combination of cash and shares of our Class A common stock, at our election. It is our current intent to settle the principal amount of the 2023 Notes with cash. During the three months ended September 30, 2019, a portion of the 2023 Notes were exchanged, as further discussed below. As of September 30, 2019 , the if-converted value of the 2023 Notes exceeded its principal amount by $120.6 million . Prior to the close of business on the business day immediately preceding the 2023 Conversion Date, the 2023 Notes are convertible at the option of the holders under the following circumstances: • during any calendar quarter commencing after the calendar quarter subsequent to the calendar quarter in which the 2023 Notes were issued (and only during such calendar quarter), if the last reported sale price of our Class A 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 of the 2023 Notes on each trading day; • during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2023 Notes for each day of that five day consecutive trading day period was less than 98% of the product of the last reported sale price of our Class A common stock and the conversion rate of the 2023 Notes on such trading day; or • upon the occurrence of specified corporate events described in the 2023 Notes Indenture. For at least 20 trading days during the period of 30 consecutive trading days ending September 30, 2019 , the last reported sale price of our Class A common stock was greater than or equal to 130% of the conversion price of the 2023 Notes on each applicable trading day. As a result, the 2023 Notes are convertible at the option of the holders during the quarter ending December 31, 2019 and were classified as current liabilities on the condensed consolidated balance sheet as of September 30, 2019. As of the date of this filing, none of the holders of the 2023 Notes have submitted requests for conversion. 2023 Capped Call Transactions In connection with the pricing of the 2023 Notes, we entered into privately negotiated capped call transactions with an affiliate of one of the initial purchasers of the 2023 Notes and other financial institutions. The capped call transactions are expected generally to reduce or offset potential dilution to holders of our common stock and/or offset the potential cash payments that we could be required to make in excess of the principal amount upon any conversion of the 2023 Notes under certain circumstances, with such reduction and/or offset subject to a cap based on the cap price. Under the capped call transactions, we purchased capped call options that in the aggregate relate to the total number of shares of our Class A common stock underlying the 2023 Notes, with an initial strike price of approximately $44.33 per share, which corresponds to the initial conversion price of the 2023 Notes and is subject to anti-dilution adjustments substantially similar to those applicable to the conversion rate of the 2023 Notes, and have a cap price of $62.22 per share. The cost of the purchased capped calls of $19.1 million was recorded as a reduction to additional paid-in-capital in our condensed consolidated balance sheet during the three months ended June 30, 2018. We elected to integrate the capped call options with the 2023 Notes for federal income tax purposes pursuant to applicable U.S. Treasury Regulations. Accordingly, the $19.1 million gross cost of the purchased capped calls will be deductible for income tax purposes as original discount interest over the term of the 2023 Notes. We recorded a deferred tax asset of $4.6 million , which represents the tax benefit of these deductions with an offsetting entry to additional paid-in capital. In connection with the exchange agreements discussed below, we terminated a corresponding portion of the existing capped call transactions that we entered into in connection with the issuance of the 2023 Notes, which resulted in the net share settlement and our receipt and retirement of 285,466 shares of Class A common stock. Exchange of 2023 Notes In connection with the issuance of the 2024 & 2026 Notes discussed below, we entered into exchange agreements with certain holders of our outstanding 2023 Notes and, using a portion of the net proceeds from the issuance of the 2024 & 2026 Notes, we exchanged $145.2 million principal amount, together with accrued and unpaid interest thereon, of the 2023 Notes for aggregate consideration of $145.4 million in cash, representing the principal and accrued interest of the exchanged 2023 Notes, and 2.2 million shares of Class A common stock. The exchange agreements were accounted for as an induced conversion, resulting from the issuance of shares of Class A common stock in excess of the shares that would have been issuable under the terms of the original 2023 Notes. This exchange resulted in a loss on induced conversion and debt extinguishment of $20.5 million , consisting of (i) a $8.2 million market premium representing the excess of the fair value of the total consideration delivered over the fair value of the Class A common stock issuable for the principal amount exchanged pursuant to the original conversion terms and (ii) $12.3 million representing the difference between the fair value and the carrying value, net of unamortized issuance costs, of the liability component of the exchanged 2023 Notes. 2024 & 2026 Notes In August 2019, we sold $400.0 million aggregate principal amount of our 0.50% Convertible Senior Notes due 2024, or the 2024 Notes, and $400.0 million aggregate principal amount of our 1.00% Convertible Senior Notes due 2026, or the 2026 Notes, including the initial purchasers’ exercise in full of their options to purchase an additional $50.0 million of the 2024 Notes and an additional $50.0 million of the 2026 Notes, in a private offering to qualified institutional buyers pursuant to Rule 144A promulgated under the Act. The 2024 Notes and the 2026 Notes are together referred to as the 2024 & 2026 Notes, and the 2023 Notes and the 2024 & 2026 Notes are collectively referred to as the Notes. The 2024 & 2026 Notes are our senior, unsecured obligations, and interest is payable semi-annually in arrears on February 1 and August 1 of each year beginning February 1, 2020. Prior to the close of business on the business day immediately preceding May 1, 2024, or the 2024 Conversion Date, in the case of the 2024 Notes and May 1, 2026, or the 2026 Conversion Date, in the case of the 2026 Notes, the 2024 & 2026 Notes are convertible at the option of holders only upon satisfaction of certain conditions and during certain periods, and thereafter, at any time until the close of business on the second scheduled trading day immediately preceding the relevant maturity date. The conversion rate is subject to customary adjustments for certain events as described in the indentures between us and U.S. Bank National Association, as trustee, or the 2024 Notes Indenture, in the case of the 2024 Notes, or the 2026 Notes Indenture, in the case of the 2026 Notes. Upon conversion, the 2024 & 2026 Notes may be settled in shares of our Class A common stock, cash or a combination of cash and shares of our Class A common stock, at our election. It is our current intent to settle the principal amount of the 2024 & 2026 Notes with cash. Prior to the close of business on the business day immediately preceding the 2024 Conversion Date, in the case of the 2024 Notes, or the 2026 Conversion Date, in the case of the 2026 Notes, the 2024 Notes and the 2026 Notes, respectively, are convertible at the option of the holders under the following circumstances: • during any calendar quarter commencing after the calendar quarter ended December 31, 2019 (and only during such calendar quarter), if the last reported sale price of our Class A 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 of the 2024 Notes or the 2026 Notes, as applicable, on each applicable trading day; • during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2024 Notes or the 2026 Notes, as applicable, for each day of that five day consecutive trading day period was less than 98% of the product of the last reported sale price of our Class A common stock and the conversion rate of such series of Notes on such trading day; or • upon the occurrence of specified corporate events described in the 2024 Notes Indenture or the 2026 Notes Indenture, as applicable. The 2024 & 2026 Notes are not currently convertible. We may not redeem the 2024 Notes or the 2026 Notes prior to the relevant maturity date. Holders of the 2024 & 2026 Notes have the right to require us to repurchase for cash all or a portion of their 2024 & 2026 Notes, as applicable, at 100% of their respective principal amounts, plus any accrued and unpaid interest, upon the occurrence of a fundamental change as defined in the 2024 Notes Indenture, in the case of the 2024 Notes, or the 2026 Notes Indenture, in the case of the 2026 Notes. We are also required to increase the conversion rate for holders who convert their 2024 Notes or 2026 Notes in connection with certain corporate events occurring prior to the relevant maturity date. The 2024 & 2026 Notes are our senior unsecured obligations and rank senior in right of payment to any of our indebtedness and other liabilities that are expressly subordinated in right of payment to the 2024 & 2026 Notes, equal in right of payment to the 2023 Notes and to any other existing and future indebtedness and other liabilities that are not subordinated, effectively junior in right of payment to any of our secured indebtedness and other liabilities to the extent of the value of the assets securing such indebtedness and other liabilities, and structurally junior in right of payment to all of our existing and future indebtedness and other liabilities (including trade payables) of our current or future subsidiaries. In accounting for the issuance of the 2024 & 2026 Notes, we separated each series of the 2024 & 2026 Notes into liability and debt components. The carrying amount of the debt component for each series of the 2024 & 2026 Notes was calculated by estimating the fair value of similar liabilities that do not have associated convertible features. The carrying amount of the equity component, representing the conversion option, for each series of the 2024 & 2026 Notes was determined by deducting the fair value of the debt component from the principal amount of each series of the 2024 & 2026 Notes. The difference between the principal amount of each series of the 2024 & 2026 Notes and the debt component is amortized to interest expense over the term of the 2024 Notes, in the case of the 2024 Notes, and the 2026 Notes, in the case of the 2026 Notes, using the effective interest method. The equity component, net of issuance costs and deferred tax effects, of each series of the 2024 & 2026 Notes is presented within additional paid-in-capital in our condensed consolidated balance sheet, and will not be remeasured as long as it continues to meet the requirements for equity classification. 2024 and 2026 Capped Call Transactions In connection with the pricing of the 2024 & 2026 Notes, we entered into privately negotiated capped call transactions with other financial institutions. The capped call transactions are expected generally to reduce or offset potential dilution to holders of our common stock and/or offset the potential cash payments that we could be required to make in excess of the principal amount upon any conversion of the relevant series of the 2024 & 2026 Notes under certain circumstances, with such reduction and/or offset subject to a cap based on the cap price. Under the capped call transactions, we purchased capped call options that in the aggregate relate to the total number of shares of our Class A common stock underlying the relevant series of the 2024 & 2026 Notes, with an initial strike price of approximately $189.36 per share, which corresponds to the initial conversion price of each of the 2024 & 2026 Notes and is subject to anti-dilution adjustments substantially similar to those applicable to the conversion rate of each of the 2024 & 2026 Notes, and have a cap price of $315.60 per share. The cost of the purchased capped calls of $87.4 million was recorded as a reduction to additional paid-in-capital in our condensed consolidated balance sheet during the three months ended September 30, 2019. We elected to integrate the capped call options with the 2024 & 2026 Notes for federal income tax purposes pursuant to applicable U.S. Treasury Regulations. Accordingly, the $87.4 million gross cost of the purchased capped calls will be deductible for income tax purposes as original discount interest over the term of the relevant series of the 2024 & 2026 Notes. We recorded a deferred tax asset of $21.6 million , which represents the tax benefit of these deductions with an offsetting entry to additional paid-in capital. The Notes consisted of the following (in thousands): As of September 30, 2019 As of December 31, 2018 2023 Notes 2024 Notes 2026 Notes 2023 Notes Liability: Principal $ 84,759 $ 400,000 $ 400,000 $ 230,000 Less: debt discount and issuance costs, net of amortization (17,680 ) (76,200 ) (100,080 ) (56,353 ) Net carrying amount $ 67,079 $ 323,800 $ 299,920 $ 173,647 Equity, net of issuance costs $ 46,474 $ 69,749 $ 93,380 $ 57,251 The following table sets forth interest expense recognized related to the Notes (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Contractual interest expense $ 1,005 $ 288 $ 1,580 $ 425 Amortization of debt issuance costs and discount 5,436 2,672 10,949 3,933 Total $ 6,441 $ 2,960 $ 12,529 $ 4,358

Equity Awards

Equity Awards	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Equity Awards	Equity Awards Stock Options Stock option activity during the nine months ended September 30, 2019 consisted of the following (in thousands, except weighted-average information): Options Outstanding Weighted- Average Exercise Price Options outstanding at December 31, 2018 4,049 $ 12.48 Granted 312 73.03 Exercised (1,293 ) 10.61 Canceled/forfeited (268 ) 18.53 Options outstanding at September 30, 2019 2,800 $ 19.51 As of September 30, 2019 , there was $ 14.6 million of unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of 2.1 years . Restricted Stock Units Restricted stock unit, or RSU, activity during the nine months ended September 30, 2019 consisted of the following (in thousands, except weighted-average information): Awards Outstanding Weighted- Average Grant Date Fair Value RSUs outstanding at December 31, 2018 1,215 $ 31.93 Granted 686 83.01 Vested (248 ) 33.87 Canceled/forfeited (179 ) 37.34 RSUs outstanding at September 30, 2019 1,474 $ 54.71 As of September 30, 2019 , total unrecognized compensation expense related to unvested RSUs was approximately $65.8 million, which is expected to be recognized over a weighted-average period of 2.5 years . We classified stock-based compensation expense in the accompanying consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Cost of revenue $ 431 $ 226 $ 1,148 $ 571 Research and development 1,659 828 4,014 2,782 Sales and marketing 3,471 1,641 8,822 4,411 General and administrative 3,275 1,687 8,211 4,301 Total $ 8,836 $ 4,382 $ 22,195 $ 12,065

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	Leases We have various non-cancelable operating leases for our corporate offices in California, Colorado, Illinois, Michigan, New York, Texas and Virginia in the United States and Australia, Canada, the Czech Republic, France, Germany, Japan, Singapore, Ukraine, the United Arab Emirates and the United Kingdom. These leases expire at various times through 2028 . Certain lease agreements contain renewal options, rent abatement, and escalation clauses that are factored into our determination of lease payments when appropriate. The table below presents lease-related assets and liabilities recorded on the condensed consolidated balance sheet (in thousands): Classification As of September 30, 2019 Assets Operating lease right-of-use assets Operating lease right-of-use assets $ 34,325 Liabilities Operating lease liabilities (current) Accrued expenses and other current liabilities $ 5,818 Operating lease liabilities (noncurrent) Operating lease liabilities 30,307 Total lease liabilities $ 36,125 Lease Costs The following lease costs were included in our condensed consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease cost $ 1,943 $ 4,961 Short-term lease cost 339 1,053 Variable lease cost 511 1,294 Total lease cost $ 2,793 $ 7,308 Supplemental Information The table below presents supplemental information related to operating leases during the nine months ended September 30, 2019 (in thousands, except weighted-average information): Cash paid for amounts included in the measurement of operating lease liabilities $ 4,468 Weighted-average remaining lease term (in years) 6.2 Weighted-average discount rate 6.2 % Undiscounted Cash Flows The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease liabilities recorded on the condensed consolidated balance sheet as of September 30, 2019 (in thousands): Remainder of 2019 $ 1,884 2020 7,989 2021 7,477 2022 6,894 2023 5,535 2024 5,317 Thereafter 9,075 Total minimum lease payments 44,171 Less imputed interest (8,046 ) Present value of future minimum lease payments 36,125 Less current obligations under leases (5,818 ) Long-term lease obligations $ 30,307 Disclosures Related to Periods Prior to Adoption of New Lease Standard Minimum lease payments under operating leases with non-cancelable terms in excess of one year as of December 31, 2018, were as follows (in thousands): 2019 $ 6,389 2020 6,781 2021 6,326 2022 6,276 2023 5,163 Thereafter 9,427 Total minimum lease payments $ 40,362

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Indemnification As of September 30, 2019 and December 31, 2018 , we have no t accrued a liability for indemnification provisions we agree to in the ordinary course of business or with our directors, executive officers and certain other employees pursuant to indemnification agreements because the likelihood of incurring a payment obligation, if any, in connection with these arrangements is not probable or reasonably estimable. Litigation From time to time, we may be involved in lawsuits, claims, investigations, and proceedings, consisting of intellectual property, commercial, employment, and other matters, which arise in the ordinary course of business. We are not currently party to any material legal proceedings or claims, nor are we aware of any pending or threatened legal proceedings or claims that could have a material adverse effect on our business, operating results, cash flows, or financial condition should such legal proceedings or claims be resolved unfavorably.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following table presents details of the benefit of income taxes and our effective tax rates (in thousands, except percentages): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Benefit of income taxes $ (8,663 ) $ (2,643 ) $ (26,456 ) $ (5,507 ) Effective tax rate (58.1 )% 32.3 % (88.2 )% 92.2 % We account for income taxes according to ASC 740, which, among other things, requires that we estimate our annual effective income tax rate for the full year and apply it to pre-tax income (loss) for each interim period, taking into account year-to-date amounts and projected results for the full year. We account for the tax effects of discrete events in the interim period they occur. The provision for income taxes consists of federal, foreign, state, and local income taxes. Our effective tax rate differs from the statutory U.S. income tax rate due to the effect of state and local income taxes, differing tax rates imposed on income earned in foreign jurisdictions and in the United States, losses in foreign jurisdictions, certain nondeductible expenses, excess tax deductions, and the changes in valuation allowances against our deferred tax assets. Our effective tax rate could change significantly from quarter to quarter because of recurring and nonrecurring factors. The benefit of income taxes for the nine months ended September 30, 2019 was primarily attributable to discrete tax benefits of $19.3 million related to excess tax deductions from settled stock options and RSUs. Neither we nor any of our subsidiaries are currently under examination from tax authorities in the jurisdictions in which we do business.

Basic and Diluted Net Income (L

Basic and Diluted Net Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Basic and Diluted Net Income (Loss) Per Share	Basic and Diluted Net Income (Loss) Per Share The following table presents the computation of net income (loss) per share (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Numerator: Net income (loss) attributable to common stockholders $ (6,240 ) $ 10,821 $ (3,545 ) $ 11,479 Denominator: Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic 63,966 61,103 62,842 60,618 Effect of dilutive securities: Convertible senior notes — 672 — 226 Contingently issuable shares — 21 — 25 Employee stock awards — 3,763 — 3,432 Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, diluted 63,966 65,559 62,842 64,301 Net income (loss) per share attributable to common stockholders, basic and diluted $ (0.10 ) $ 0.18 $ (0.06 ) $ 0.19 Net income (loss) per share attributable to common stockholders, diluted $ (0.10 ) $ 0.17 $ (0.06 ) $ 0.18 The following weighted-average equivalent shares of common stock, excluding the impact of the treasury stock method, were excluded from the diluted net income (loss) per share calculation because their inclusion would have been anti-dilutive (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Options to purchase common stock 3,023 23 3,356 504 Unvested restricted stock units 1,460 12 1,388 157 Convertible senior notes 5,715 — 5,366 — Total shares excluded from net loss per share 10,198 35 10,110 661 It is our current intent to settle the principal amounts of the Notes with cash and, therefore, we use the treasury stock method for calculating any potential dilutive effect of the conversion options on diluted net income per share. The conversion options may have a dilutive impact on net income per share of common stock when the average market price per share of our Class A common stock for a given period exceeds the conversion price of the 2023 Notes and 2024 & 2026 Notes of $44.33 and $189.36

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event Acquisition of Feature Labs, Inc. On October 3, 2019, we acquired 100% of the outstanding equity of Feature Labs, Inc., a Delaware corporation, or Feature Labs, pursuant to an Agreement and Plan of Merger, or the Merger Agreement, dated as of October 2, 2019. The aggregate consideration payable in exchange for all of the outstanding equity interests of Feature Labs, Inc. was approximately $25.5 million in cash, subject to customary adjustments set forth in the Merger Agreement. In addition to the purchase price, we entered into share-based compensation agreements with the employees of Feature Labs, Inc. with a value of up to $12.5 million , comprised of both performance- and time-based restricted stock units. Given the timing of the completion of the acquisition, we are currently in the process of valuing the assets acquired and liabilities assumed in the acquisition. As a result, we are unable to provide the amounts recognized as of the acquisition date for the major classes of assets acquired and liabilities assumed and other disclosures. Operating Lease Agreement In October 2019, we entered into a new operating lease agreement for approximately 180,000 square feet of office space located in Irvine, California that will eventually replace our existing corporate headquarters. The initial lease term is 84 months and is anticipated to commence on or about March 23, 2020, with an option to renew for two extension periods of 60 months

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Our unaudited interim condensed consolidated financial statements are presented in accordance with accounting standards generally accepted in the United States of America, or U.S. GAAP, for interim financial information. Certain information and disclosures normally included in consolidated financial statements presented in accordance with U.S. GAAP have been condensed or omitted. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes included in our Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission, or SEC, on March 1, 2019. The unaudited interim condensed consolidated financial statements have been prepared on a basis consistent with that used to prepare the audited annual consolidated financial statements and reflect all adjustments which are, in the opinion of our management, of a normal recurring nature and necessary for a fair statement of the condensed consolidated financial statements. All intercompany accounts and transactions have been eliminated in consolidation. We adopted Accounting Standards Codification, Revenue from Contracts with Customers , or ASC 606, effective January 1, 2018 on a modified retrospective basis during the fourth quarter of 2018 for our annual reporting period for the year ended December 31, 2018. As a result, the quarterly financial results for the three and nine months ended September 30, 2018 have been recast to reflect the adoption of ASC 606. The operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results expected for the full year ending December 31, 2019 .
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates and assumptions. On an ongoing basis, our management evaluates estimates and assumptions based on historical data and experience, as well as various other factors that our management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities.
Operating Segments	Operating Segments Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, or CODM, who is our chief executive officer, in deciding how to allocate resources and assess our financial and operational performance. Our CODM evaluates our financial information and resources and assesses the performance of these resources on a consolidated and aggregated basis. As a result, we have determined that our business operates in a single operating segment.
Leases	Leases Through December 31, 2018, we recognized rent expense related to operating leases on a straight-line basis over the lease term and, accordingly, recorded the difference between rent payments and rent expense as a deferred rent liability. Effective January 1, 2019, we adopted Accounting Standards Update, or ASU, 2016-02, Leases , or ASC 842. See Recently Adopted Accounting Pronouncements below. Under ASC 842, we determine if an arrangement is a lease at contract inception. Operating leases are included in operating lease right-of-use assets, other current liabilities and operating lease liabilities in our condensed consolidated balance sheets. Operating lease charges are recorded in operating expenses in our condensed consolidated statements of operations and comprehensive income (loss). Operating lease right-of-use assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. We do not separate lease and non-lease components for all underlying asset classes. As most of our leases do not provide a readily determinable implicit rate, we estimate our incremental borrowing rate to discount the lease payments based on information available at lease commencement. We determine our incremental borrowing rate for each lease based primarily on the lease term and the economic environment of the applicable country or region. The operating lease right-of-use asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The lease term includes options to extend or terminate when we are reasonably certain the option will be exercised. In general, we are not reasonably certain to exercise such options. We recognize lease expense for minimum lease payments on a straight-line basis over the lease term, while variable lease payments, such as common area maintenance, are recognized as incurred. We elected the practical expedient to not recognize operating lease right-of-use assets and operating lease liabilities that arise from short-term leases (i.e., leases with a term of 12 months or less).
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, or FASB, issued ASU 2016-02, codified as ASC 842, which requires lessees to record the assets and liabilities arising from all leases, with the exception of short-term leases, in the statement of financial position. Under ASC 842, lessees will recognize a liability for lease payments and a right-of-use asset. This guidance retains the distinction between finance leases and operating leases and the classification criteria remain similar. For financing leases, a lessee will recognize the interest on a lease liability separate from amortization of the right-of-use asset. In addition, repayments of principal will be presented within financing activities, and interest payments will be presented within operating activities in the statement of cash flows. For operating leases, a lessee will recognize a single lease cost on a straight-line basis and classify all cash payments within operating activities in the statement of cash flows. We adopted the new lease accounting standard effective January 1, 2019 using the optional transition method described in ASU 2018-11, Leases – Targeted Improvements , which was issued in July 2018. Under the optional transition method, we recognized the cumulative effect of initially applying the guidance as an adjustment to the operating lease right-of-use assets and operating lease liabilities on our condensed consolidated balance sheet on January 1, 2019 in the amount of $24.8 million without retrospective application to comparative periods. The adoption of ASC 842 did not have an impact on retained earnings on our condensed consolidated balance sheet as of January 1, 2019 and is not expected to have a material impact on our condensed consolidated statements of operations and comprehensive income (loss). We elected the package of practical expedients permitted under the transition guidance within the new standard which allowed us to carry forward our historical assessments of whether contracts are or contain leases, lease classification and initial direct costs. See Note 9, Leases , for additional details. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . The new standard amends the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology. As a result, we will be required to use a forward-looking expected credit loss model for accounts receivables and other commitments to extend credit. This pronouncement is effective for reporting periods beginning after December 15, 2019. We are evaluating the potential impact of this guidance on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing costs incurred to develop or obtain internal-use software. This guidance will be effective for us for annual reporting periods beginning after December 15, 2019 and for interim periods within those annual periods and can be applied either retrospectively or prospectively to all implementation costs after the date of adoption. Early adoption is permitted. We currently plan to adopt this new accounting standard prospectively. As a result of the adoption, we will be required to capitalize additional costs related to the implementation of cloud computing arrangements that we have historically expensed as incurred.
Income Taxes	We account for income taxes according to ASC 740, which, among other things, requires that we estimate our annual effective income tax rate for the full year and apply it to pre-tax income (loss) for each interim period, taking into account year-to-date amounts and projected results for the full year. We account for the tax effects of discrete events in the interim period they occur. The provision for income taxes consists of federal, foreign, state, and local income taxes. Our effective tax rate differs from the statutory U.S. income tax rate due to the effect of state and local income taxes, differing tax rates imposed on income earned in foreign jurisdictions and in the United States, losses in foreign jurisdictions, certain nondeductible expenses, excess tax deductions, and the changes in valuation allowances against our deferred tax assets. Our effective tax rate could change significantly from quarter to quarter because of recurring and nonrecurring factors. The benefit of income taxes for the nine months ended September 30, 2019 was primarily attributable to discrete tax benefits of $19.3 million

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The disaggregation of revenue by region, revenue by type of performance obligation and cost of revenue by type of performance obligation, and the timing of revenue recognition, was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenue by region: United States $ 74,710 $ 43,176 $ 185,388 $ 114,615 International 28,687 19,413 76,072 49,805 Total $ 103,397 $ 62,589 $ 261,460 $ 164,420 Revenue by type of performance obligation: Subscription-based software license $ 54,332 $ 28,822 $ 125,981 $ 72,781 PCS and services 49,065 33,767 135,479 91,639 Total $ 103,397 $ 62,589 $ 261,460 $ 164,420 Cost of revenue by type of performance obligation: Subscription-based software license $ 1,082 $ 521 $ 2,930 $ 1,647 PCS and services 8,563 5,289 24,010 14,436 Total $ 9,645 $ 5,810 $ 26,940 $ 16,083
Deferred Contract Costs	A summary of the activity impacting our deferred contract costs during the nine months ended September 30, 2019 is presented below (in thousands): Balances at December 31, 2018 $ 22,391 Additional contract costs deferred 23,922 Amortization of deferred contract costs (19,467 ) Balances at September 30, 2019 $ 26,846

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Summary of Cash and Cash Equivalents and Investments' Costs, Gross Unrealized Gains (Losses), and Fair Value by Major Security Type Recorded as Cash and Cash Equivalents or Short-Term or Long-Term Investments	The following tables present our cash and cash equivalents’ and investments’ costs, gross unrealized gains (losses), and fair value by major security type recorded as cash and cash equivalents or short-term or long-term investments as of September 30, 2019 and December 31, 2018 (in thousands): As of September 30, 2019 Cost Unrealized Gains Fair Value Cash and Cash Equivalents Short-term Investments Long-term Investments Cash $ 630,790 $ — $ 630,790 $ 630,790 $ — $ — Level 1: Money market funds 11,660 — 11,660 11,660 — — Subtotal $ 11,660 $ — $ 11,660 $ 11,660 $ — $ — Level 2: Commercial paper 63,347 — 63,347 — 63,347 — Certificates of deposit — — — — — — U.S. Treasury and agency bonds 195,353 251 195,604 — 131,202 64,402 Corporate bonds 84,468 617 85,085 — 37,427 47,658 Subtotal $ 343,168 $ 868 $ 344,036 $ — $ 231,976 $ 112,060 Level 3: — — — — — — Total $ 985,618 $ 868 $ 986,486 $ 642,450 $ 231,976 $ 112,060 As of December 31, 2018 Cost Unrealized Losses Fair Value Cash and Short-term Investments Long-term Investments Cash $ 78,194 $ — $ 78,194 $ 78,194 $ — $ — Level 1: Money market funds 11,780 — 11,780 11,780 — — Subtotal $ 11,780 $ — $ 11,780 $ 11,780 $ — $ — Level 2: Commercial paper 1,313 — 1,313 — 1,313 — Certificates of deposit 6,101 — 6,101 — 5,351 750 U.S. Treasury and agency bonds 220,136 (139 ) 219,997 — 158,204 61,793 Corporate bonds 108,968 (110 ) 108,858 — 74,850 34,008 Subtotal $ 336,518 $ (249 ) $ 336,269 $ — $ 239,718 $ 96,551 Level 3: — — — — — — Total $ 426,492 $ (249 ) $ 426,243 $ 89,974 $ 239,718 $ 96,551
Reconciliation of Beginning and Ending Balances of Acquisition-Related Accrued Contingent Consideration	The following table presents a reconciliation of the beginning and ending balances of acquisition-related accrued contingent consideration using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2019 and 2018 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 318 $ 1,974 $ 2,143 $ 975 Obligations assumed — — — 1,200 Change in fair value — — (75 ) 455 Settlements — — (1,750 ) (656 ) Ending balance $ 318 $ 1,974 $ 318 $ 1,974

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Change in Carrying Amount of Goodwill	The change in carrying amount of goodwill for the nine months ended September 30, 2019 was as follows (in thousands): Goodwill as of December 31, 2018 $ 9,494 Goodwill recorded in connection with acquisition 9,453 Effects of foreign currency translation (111 ) Goodwill as of September 30, 2019 $ 18,836
Schedule of Intangible Assets	Intangible assets consisted of the following (in thousands, except years): As of September 30, 2019 Weighted- Average Useful Life in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Customer relationships 7.0 $ 1,448 $ (335 ) $ 1,113 Completed technology 4.8 19,855 (5,686 ) 14,169 $ 21,303 $ (6,021 ) $ 15,282 As of December 31, 2018 Weighted- Gross Carrying Value Accumulated Amortization Net Carrying Value Customer relationships 6.9 $ 1,554 $ (221 ) $ 1,333 Completed technology 5.7 9,180 (3,022 ) 6,158 $ 10,734 $ (3,243 ) $ 7,491
Schedule of Intangible Asset Amortization Expense	We classified intangible asset amortization expense in the accompanying condensed consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Cost of revenue $ 1,128 $ 456 $ 2,670 $ 1,353 Sales and marketing 53 62 168 159 Total $ 1,181 $ 518 $ 2,838 $ 1,512
Schedule of Finite-Lived Intangible Assets Estimated Remaining Amortization Expense	The following table presents our estimates of remaining amortization expense for finite-lived intangible assets at September 30, 2019 (in thousands): Remainder of 2019 $ 1,181 2020 4,387 2021 4,169 2022 3,624 2023 1,272 Thereafter 649 Total amortization expense $ 15,282

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Summary of Convertible Debt	The Notes consisted of the following (in thousands): As of September 30, 2019 As of December 31, 2018 2023 Notes 2024 Notes 2026 Notes 2023 Notes Liability: Principal $ 84,759 $ 400,000 $ 400,000 $ 230,000 Less: debt discount and issuance costs, net of amortization (17,680 ) (76,200 ) (100,080 ) (56,353 ) Net carrying amount $ 67,079 $ 323,800 $ 299,920 $ 173,647 Equity, net of issuance costs $ 46,474 $ 69,749 $ 93,380 $ 57,251 The following table presents details of our convertible senior notes, which are further discussed below (original principal in thousands): Month Issued Maturity Date Original Principal (including over-allotment) Coupon Interest Rate Effective Interest Rate Conversion Rate Initial Conversion Price 2023 Notes May 2018 June 1, 2023 $ 230,000 0.5 % 7.00 % $ 22.5572 $ 44.33 2024 Notes August 2019 August 1, 2024 $ 400,000 0.5 % 4.96 % $ 5.2809 $ 189.36 2026 Notes August 2019 August 1, 2026 $ 400,000 1.0 % 5.41 % $ 5.2809 $ 189.36
Summary of Interest Expense	The following table sets forth interest expense recognized related to the Notes (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Contractual interest expense $ 1,005 $ 288 $ 1,580 $ 425 Amortization of debt issuance costs and discount 5,436 2,672 10,949 3,933 Total $ 6,441 $ 2,960 $ 12,529 $ 4,358

Equity Awards (Tables)

Equity Awards (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Stock Option Activity	Stock option activity during the nine months ended September 30, 2019 consisted of the following (in thousands, except weighted-average information): Options Outstanding Weighted- Average Exercise Price Options outstanding at December 31, 2018 4,049 $ 12.48 Granted 312 73.03 Exercised (1,293 ) 10.61 Canceled/forfeited (268 ) 18.53 Options outstanding at September 30, 2019 2,800 $ 19.51
Schedule of RSU Activity	Restricted stock unit, or RSU, activity during the nine months ended September 30, 2019 consisted of the following (in thousands, except weighted-average information): Awards Outstanding Weighted- Average Grant Date Fair Value RSUs outstanding at December 31, 2018 1,215 $ 31.93 Granted 686 83.01 Vested (248 ) 33.87 Canceled/forfeited (179 ) 37.34 RSUs outstanding at September 30, 2019 1,474 $ 54.71
Schedule of Stock-based Compensation Expense	We classified stock-based compensation expense in the accompanying consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Cost of revenue $ 431 $ 226 $ 1,148 $ 571 Research and development 1,659 828 4,014 2,782 Sales and marketing 3,471 1,641 8,822 4,411 General and administrative 3,275 1,687 8,211 4,301 Total $ 8,836 $ 4,382 $ 22,195 $ 12,065

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lease-Related Assets and Liabilities	The table below presents lease-related assets and liabilities recorded on the condensed consolidated balance sheet (in thousands): Classification As of September 30, 2019 Assets Operating lease right-of-use assets Operating lease right-of-use assets $ 34,325 Liabilities Operating lease liabilities (current) Accrued expenses and other current liabilities $ 5,818 Operating lease liabilities (noncurrent) Operating lease liabilities 30,307 Total lease liabilities $ 36,125
Lease Costs and Supplemental Information	The table below presents supplemental information related to operating leases during the nine months ended September 30, 2019 (in thousands, except weighted-average information): Cash paid for amounts included in the measurement of operating lease liabilities $ 4,468 Weighted-average remaining lease term (in years) 6.2 Weighted-average discount rate 6.2 % The following lease costs were included in our condensed consolidated statements of operations and comprehensive income (loss) as follows (in thousands): Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease cost $ 1,943 $ 4,961 Short-term lease cost 339 1,053 Variable lease cost 511 1,294 Total lease cost $ 2,793 $ 7,308
Undiscounted Cash Flows for Operating Lease Liabilities	The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease liabilities recorded on the condensed consolidated balance sheet as of September 30, 2019 (in thousands): Remainder of 2019 $ 1,884 2020 7,989 2021 7,477 2022 6,894 2023 5,535 2024 5,317 Thereafter 9,075 Total minimum lease payments 44,171 Less imputed interest (8,046 ) Present value of future minimum lease payments 36,125 Less current obligations under leases (5,818 ) Long-term lease obligations $ 30,307
Minimum Lease Payments Prior to Adoption of ASC 842	Minimum lease payments under operating leases with non-cancelable terms in excess of one year as of December 31, 2018, were as follows (in thousands): 2019 $ 6,389 2020 6,781 2021 6,326 2022 6,276 2023 5,163 Thereafter 9,427 Total minimum lease payments $ 40,362

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes and Effective Tax Rates	The following table presents details of the benefit of income taxes and our effective tax rates (in thousands, except percentages): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Benefit of income taxes $ (8,663 ) $ (2,643 ) $ (26,456 ) $ (5,507 ) Effective tax rate (58.1 )% 32.3 % (88.2 )% 92.2 %

Basic and Diluted Net Income _2

Basic and Diluted Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of Net Income Per Share	The following table presents the computation of net income (loss) per share (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Numerator: Net income (loss) attributable to common stockholders $ (6,240 ) $ 10,821 $ (3,545 ) $ 11,479 Denominator: Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic 63,966 61,103 62,842 60,618 Effect of dilutive securities: Convertible senior notes — 672 — 226 Contingently issuable shares — 21 — 25 Employee stock awards — 3,763 — 3,432 Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, diluted 63,966 65,559 62,842 64,301 Net income (loss) per share attributable to common stockholders, basic and diluted $ (0.10 ) $ 0.18 $ (0.06 ) $ 0.19 Net income (loss) per share attributable to common stockholders, diluted $ (0.10 ) $ 0.17 $ (0.06 ) $ 0.18
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following weighted-average equivalent shares of common stock, excluding the impact of the treasury stock method, were excluded from the diluted net income (loss) per share calculation because their inclusion would have been anti-dilutive (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Options to purchase common stock 3,023 23 3,356 504 Unvested restricted stock units 1,460 12 1,388 157 Convertible senior notes 5,715 — 5,366 — Total shares excluded from net loss per share 10,198 35 10,110 661

Significant Accounting Polici_3

Significant Accounting Policies (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 34,325
Operating lease liabilities	$ 36,125
ASU 2018-11
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 24,800
Operating lease liabilities		$ 0

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 103,397	$ 62,589	$ 261,460	$ 164,420
Cost of revenue	9,645	5,810	26,940	16,083
United States
Disaggregation of Revenue [Line Items]
Revenue	74,710	43,176	185,388	114,615
International
Disaggregation of Revenue [Line Items]
Revenue	28,687	19,413	76,072	49,805
Subscription-based software license
Disaggregation of Revenue [Line Items]
Revenue	54,332	28,822	125,981	72,781
Cost of revenue	1,082	521	2,930	1,647
PCS and services
Disaggregation of Revenue [Line Items]
Revenue	49,065	33,767	135,479	91,639
Cost of revenue	$ 8,563	$ 5,289	$ 24,010	$ 14,436
Geographic Concentration Risk | Revenue from Contract with Customer | United Kingdom
Disaggregation of Revenue [Line Items]
Concentration risk, percent	12.30%	10.70%	10.50%	10.40%

Revenue - Contract Assets and C

Revenue - Contract Assets and Contract Liabilities (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract assets, current	$ 21,100,000	$ 21,100,000	$ 11,200,000
Contract assets, noncurrent	29,300,000	29,300,000	$ 16,500,000
Contract assets, impairment	$ 0	0
Revenue recognized related to amounts that were included in deferred revenue		$ 75,400,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Transferred to receivables period		12 months
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Transferred to receivables period		24 months

Revenue - Assets Recognized fro

Revenue - Assets Recognized from Costs to Obtain Contracts with Customers (Details)	9 Months Ended
	Sep. 30, 2019USD ($)
Change in Capitalized Contract Costs [Roll Forward]
Balances at December 31, 2018	$ 22,391,000
Additional contract costs deferred	23,922,000
Amortization of deferred contract costs	(19,467,000)
Balances at September 30, 2019	26,846,000
Deferred contract costs expected to be amortized within the next 12 months	11,900,000
Impairments of assets related to deferred contract costs	$ 0

Revenue - Remaining Performance

Revenue - Remaining Performance Obligation (Details) $ in Millions	Sep. 30, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, amount	$ 271.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, amount	$ 236.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, period

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands	Apr. 04, 2019	Sep. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 18,836	$ 9,494
ClearStory Data Inc.
Business Acquisition [Line Items]
Business combination acquired percentage	100.00%
Aggregate consideration payable in exchange for outstanding equity interest	$ 19,600
Cash consideration held back for customary indemnification matters amount	$ 3,000
Cash consideration held back for customary indemnification matters period	18 months
Acquisition related costs	$ 1,200
Business combination, employee retention compensation	$ 6,000
Business combination, employee retention compensation period	24 months
Goodwill	$ 9,500
Purchase price allocation, assets acquired and liabilities assumed, net	600
ClearStory Data Inc. | Customer-related intangible assets
Business Acquisition [Line Items]
Completed technology intangible assets	10,700
ClearStory Data Inc. | Customer-related intangible assets | Level 3
Business Acquisition [Line Items]
Fair value of completed technology	$ 10,700
Amortization period	4 years
ClearStory Data Inc. | Customer-related intangible assets | Level 3 | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Business combination, measurement input, discount rate	0.20

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Cash and Cash Equivalents and Investments' Costs, Gross Unrealized Gains (Losses), and Fair Value by Major Security Type Recorded as Cash and Cash Equivalents or Short-Term or Long-Term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 642,450	$ 89,974
Short-term Investments	231,976	239,718
Long-term Investments	112,060	96,551
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	642,450	89,974
Unrealized Gains	868
Unrealized Losses		(249)
Cash and cash equivalents and investment, cost	985,618	426,492
Cash and cash equivalents and investments, fair value	986,486	426,243
Short-term Investments	231,976	239,718
Long-term Investments	112,060	96,551
Fair Value, Measurements, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	630,790	78,194
Cash and cash equivalents, fair value	630,790	78,194
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	11,660	11,780
Cash and cash equivalents, fair value	11,660	11,780
Fair Value, Measurements, Recurring | Level 1 | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	11,660	11,780
Cash and cash equivalents, fair value	11,660	11,780
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0
Investments, cost	343,168	336,518
Unrealized Gains	868
Unrealized Losses		(249)
Investments, fair value	344,036	336,269
Short-term Investments	231,976	239,718
Long-term Investments	112,060	96,551
Fair Value, Measurements, Recurring | Level 2 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0
Investments, cost	63,347	1,313
Unrealized Gains	0
Unrealized Losses		0
Investments, fair value	63,347	1,313
Short-term Investments	63,347	1,313
Long-term Investments	0	0
Fair Value, Measurements, Recurring | Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, cost	0	6,101
Unrealized Gains	0
Unrealized Losses		0
Investments, fair value	0	6,101
Short-term Investments	0	5,351
Long-term Investments	0	750
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury and agency bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, cost	195,353	220,136
Unrealized Gains	251
Unrealized Losses		(139)
Investments, fair value	195,604	219,997
Short-term Investments	131,202	158,204
Long-term Investments	64,402	61,793
Fair Value, Measurements, Recurring | Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, cost	84,468	108,968
Unrealized Gains	617
Unrealized Losses		(110)
Investments, fair value	85,085	108,858
Short-term Investments	37,427	74,850
Long-term Investments	47,658	34,008
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, cost	0	0
Unrealized Gains	0
Unrealized Losses		0
Investments, fair value	0	0
Short-term Investments	0	0
Long-term Investments	$ 0	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Fair Value Disclosures [Line Items]
Gross unrealized losses	$ 0.1
Number of shares issued upon achievement of certain milestones (in shares)	11,250
Fair value of shares issued upon achievement of certain milestones	$ 0.8
Number of shares previously earned and issued (in shares)	10,205
Payment for to former shareholders upon achievement of certain milestones	$ 1
Fair value of convertible senior notes	1,000
Domestic Cash and Investments
Fair Value Disclosures [Line Items]
Cash and cash equivalents, restricted cash and investments	$ 978.9	$ 417.9
Minimum
Fair Value Disclosures [Line Items]
Long-term investments maturity period	1 year
Maximum
Fair Value Disclosures [Line Items]
Long-term investments maturity period	2 years

Fair Value Measurements - Recon

Fair Value Measurements - Reconciliation of Beginning and Ending Balances of Acquisition-Related Accrued Contingent Consideration (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 318	$ 1,974	$ 2,143	$ 975
Obligations assumed	0	0	0	1,200
Change in fair value	0	0	(75)	455
Settlements	0	0	(1,750)	(656)
Ending balance	$ 318	$ 1,974	$ 318	$ 1,974

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Goodwill [Roll Forward]
Goodwill as of December 31, 2018	$ 9,494
Goodwill recorded in connection with acquisition	9,453
Effects of foreign currency translation	(111)
Goodwill as of September 30, 2019	$ 18,836

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 21,303	$ 10,734
Accumulated Amortization	(6,021)	(3,243)
Net Carrying Value	$ 15,282	$ 7,491
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Useful Life in Years	7 years	6 years 10 months 24 days
Gross Carrying Value	$ 1,448	$ 1,554
Accumulated Amortization	(335)	(221)
Net Carrying Value	$ 1,113	$ 1,333
Completed technology
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Useful Life in Years	4 years 9 months 18 days	5 years 8 months 12 days
Gross Carrying Value	$ 19,855	$ 9,180
Accumulated Amortization	(5,686)	(3,022)
Net Carrying Value	$ 14,169	$ 6,158

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 1,181	$ 518	$ 2,838	$ 1,512
Cost of revenue
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,128	456	2,670	1,353
Sales and marketing
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 53	$ 62	$ 168	$ 159

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets Estimated Remaining Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2019	$ 1,181
2020	4,387
2021	4,169
2022	3,624
2023	1,272
Thereafter	649
Net Carrying Value	$ 15,282	$ 7,491

Convertible Senior Notes - Summ

Convertible Senior Notes - Summary of Debt (Details) - Convertible Senior Notes	3 Months Ended
	Sep. 30, 2019USD ($)$ / shares	Jun. 30, 2018USD ($)$ / shares	Aug. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Convertible Senior Note due 2023, 0.5%
Debt Instrument [Line Items]
Original Principal (including over-allotment)	$ 84,759,000	$ 230,000,000		$ 230,000,000
Coupon Interest Rate		0.50%
Effective Interest Rate		7.00%
Conversion Rate		0.0225572
Initial Conversion Price | $ / shares	$ 44.33	$ 44.33
Principal	$ 84,759,000	$ 230,000,000		230,000,000
Less: debt discount and issuance costs, net of amortization	(17,680,000)			(56,353,000)
Net carrying amount	67,079,000			173,647,000
Equity, net of issuance costs	46,474,000			$ 57,251,000
Convertible Senior Note due 2024, 0.50%
Debt Instrument [Line Items]
Original Principal (including over-allotment)	$ 400,000,000		$ 400,000,000
Coupon Interest Rate	0.50%		0.50%
Effective Interest Rate	4.96%
Conversion Rate	0.0052809
Initial Conversion Price | $ / shares	$ 189.36
Principal	$ 400,000,000		$ 400,000,000
Less: debt discount and issuance costs, net of amortization	(76,200,000)
Net carrying amount	323,800,000
Equity, net of issuance costs	69,749,000
Convertible Senior Note due 2026, 1.0%
Debt Instrument [Line Items]
Original Principal (including over-allotment)	$ 400,000,000		$ 400,000,000
Coupon Interest Rate	1.00%		1.00%
Effective Interest Rate	5.41%
Conversion Rate	0.0052809
Initial Conversion Price | $ / shares	$ 189.36
Principal	$ 400,000,000		$ 400,000,000
Less: debt discount and issuance costs, net of amortization	(100,080,000)
Net carrying amount	299,920,000
Equity, net of issuance costs	$ 93,380,000

Convertible Senior Notes - Addi

Convertible Senior Notes - Additional Information (Details)	Jan. 01, 2020day	Sep. 30, 2019USD ($)day$ / optionshares	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)day$ / option	Sep. 30, 2019USD ($)$ / option	Sep. 30, 2018USD ($)	Aug. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Derivative [Line Items]
Capped calls, cost		$ 87,400,000		$ 19,100,000
Capped calls, deferred tax asset		21,600,000			$ 21,600,000			$ 4,600,000
Debt Instrument [Line Items]
Loss on induced conversion and debt extinguishment		$ 20,507,000	$ 0		20,507,000	$ 0
Loss on induced conversion and debt extinguishment					$ 20,507,000	$ 0
Price Risk Derivative
Derivative [Line Items]
Capped calls, initial strike price (in dollars per share) | $ / option		189.36		44.33	189.36
Capped calls, cap price (in dollars per share) | $ / option		315.60		62.22	315.60
Convertible Senior Note due 2023, 0.5% | Debt Instrument, Conversion, Option Two | Convertible Senior Notes
Debt Instrument [Line Items]
Loss on induced conversion and debt extinguishment		$ 20,500,000
Convertible debt, consideration given in excess of original conversion terms		8,200,000
Loss on induced conversion and debt extinguishment		(12,300,000)
Convertible Senior Notes | Convertible Senior Note due 2023, 0.5%
Debt Instrument [Line Items]
Principal		$ 84,759,000		$ 230,000,000	$ 84,759,000			$ 230,000,000
Coupon Interest Rate				0.50%
If-converted value in excess of principal					120,600,000
Convertible Senior Notes | Convertible Senior Note due 2023, 0.5% | Debt Instrument, Conversion, Option One
Debt Instrument [Line Items]
Convertible debt, threshold trading days | day		20		20
Convertible debt, threshold consecutive trading days | day		30		30
Convertible debt, threshold percentage of stock price trigger		130.00%		130.00%
Convertible debt, converted instrument, original amount		$ 145,200,000
Convertible Senior Notes | Convertible Senior Note due 2023, 0.5% | Debt Instrument, Conversion, Option Two
Debt Instrument [Line Items]
Convertible debt, threshold trading days | day				5
Convertible debt, threshold consecutive trading days | day				5
Convertible debt, threshold percentage of stock price trigger				98.00%
Convertible Senior Notes | Convertible Senior Notes Due 2023, 2024, 2026 | Debt Instrument, Conversion, Option One
Debt Instrument [Line Items]
Convertible debt, converted instrument, original amount		145,400,000
Convertible Senior Notes | Convertible Senior Notes due 2023, Over-Allotment Option, 0.5%
Debt Instrument [Line Items]
Principal				$ 30,000,000
Convertible Senior Notes | Convertible Senior Note due 2024, 0.50%
Debt Instrument [Line Items]
Principal		$ 400,000,000			$ 400,000,000		$ 400,000,000
Coupon Interest Rate		0.50%			0.50%		0.50%
Convertible Senior Notes | Convertible Senior Note due 2026, 1.0%
Debt Instrument [Line Items]
Principal		$ 400,000,000			$ 400,000,000		$ 400,000,000
Coupon Interest Rate		1.00%			1.00%		1.00%
Convertible Senior Notes | Convertible Senior Notes due 2024, Over-Allotment Option, 0.5%
Debt Instrument [Line Items]
Principal							$ 50,000,000
Convertible Senior Notes | Convertible Senior Notes due 2026, Over-Allotment Option, 1.0%
Debt Instrument [Line Items]
Principal							$ 50,000,000
Convertible Senior Notes | Convertible Senior Notes due 2024 & 2026, 0.50%, 1.0% | Debt Instrument, Conversion, Option One | Forecast
Debt Instrument [Line Items]
Convertible debt, threshold trading days | day	20
Convertible debt, threshold consecutive trading days | day	30
Convertible debt, threshold percentage of stock price trigger	130.00%
Convertible Senior Notes | Convertible Senior Notes due 2024 & 2026, 0.50%, 1.0% | Debt Instrument, Conversion, Option Two | Forecast
Debt Instrument [Line Items]
Convertible debt, threshold trading days | day	5
Convertible debt, threshold consecutive trading days | day	5
Convertible debt, threshold percentage of stock price trigger	98.00%
Class A Common Stock
Derivative [Line Items]
Capped calls, retirement of common stock (in shares) | shares		285,466
Class A Common Stock | Debt Instrument, Conversion, Option Two
Debt Instrument [Line Items]
Convertible debt, converted instrument, shares issued | shares		2,200,000

Convertible Senior Notes - Su_2

Convertible Senior Notes - Summary of Interest Expense (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Aug. 31, 2019	Dec. 31, 2018	Jun. 30, 2018
Debt Instrument [Line Items]
Amortization of debt issuance costs and discount			$ 10,949,000	$ 3,933,000
Convertible Senior Notes | Convertible Senior Note due 2026, 1.0%
Debt Instrument [Line Items]
Principal	$ 400,000,000		400,000,000		$ 400,000,000
Less: debt discount and issuance costs, net of amortization	(100,080,000)		(100,080,000)
Long-term Debt, Gross	299,920,000		299,920,000
Equity, net of issuance costs	93,380,000		93,380,000
Convertible Senior Notes | Convertible Senior Note due 2023, 0.5%
Debt Instrument [Line Items]
Principal	84,759,000		84,759,000			$ 230,000,000	$ 230,000,000
Less: debt discount and issuance costs, net of amortization	(17,680,000)		(17,680,000)			(56,353,000)
Long-term Debt, Gross	67,079,000		67,079,000			173,647,000
Equity, net of issuance costs	46,474,000		46,474,000			$ 57,251,000
Convertible Senior Notes | Convertible Senior Note due 2024, 0.50%
Debt Instrument [Line Items]
Principal	400,000,000		400,000,000		$ 400,000,000
Less: debt discount and issuance costs, net of amortization	(76,200,000)		(76,200,000)
Long-term Debt, Gross	323,800,000		323,800,000
Equity, net of issuance costs	69,749,000		69,749,000
Convertible Senior Notes | Convertible senior notes
Debt Instrument [Line Items]
Contractual interest expense	1,005,000	$ 288,000	1,580,000	425,000
Amortization of debt issuance costs and discount	5,436,000	2,672,000	10,949,000	3,933,000
Total	$ 6,441,000	$ 2,960,000	$ 12,529,000	$ 4,358,000

Equity Awards - Schedule of Sto

Equity Awards - Schedule of Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Options Outstanding
Options outstanding, beginning balance (in shares) | shares	4,049,000
Granted (in shares) | shares	312,000
Exercised (in shares) | shares	(1,293,000)
Canceled/forfeited (in shares) | shares	(268,000)
Options outstanding, ending balance (in shares) | shares	2,800,000
Weighted-Average Exercise Price
Weighted-average exercise price, beginning balance (in dollars per share) | $ / shares	$ 12.48
Weighted-average exercise price, granted (in dollars per share) | $ / shares	73.03
Weighted-average exercise price, exercised (in dollars per share) | $ / shares	10.61
Weighted-average exercise price, canceled/forfeited (in dollars per share) | $ / shares	18.53
Weighted-average exercise price, ending balance (in dollars per share) | $ / shares	$ 19.51

Equity Awards - Additional Info

Equity Awards - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock options	$ 14.6
Weighted-average period, expected to be recognized	2 years 1 month 6 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period, expected to be recognized	2 years 6 months
Unrecognized compensation expense, related to unvested RSUs	$ 65.8

Equity Awards - Schedule of RSU

Equity Awards - Schedule of RSU Activity (Details) - Restricted Stock Units	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Awards Outstanding
Beginning balance (in shares) | shares	1,215,000
Granted (in shares) | shares	686,000
Vested (in shares) | shares	(248,000)
Canceled/forfeited (in shares) | shares	(179,000)
Ending balance (in shares) | shares	1,474,000
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 31.93
Granted (in dollars per share) | $ / shares	83.01
Vested (in dollars per share) | $ / shares	33.87
Canceled/forfeited (in dollars per share) | $ / shares	37.34
Ending balance (in dollars per share) | $ / shares	$ 54.71

Equity Awards - Schedule of S_2

Equity Awards - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 8,836	$ 4,382	$ 22,195	$ 12,065
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	431	226	1,148	571
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	1,659	828	4,014	2,782
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	3,471	1,641	8,822	4,411
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 3,275	$ 1,687	$ 8,211	$ 4,301

Leases - Lease-Related Assets a

Leases - Lease-Related Assets and Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Operating lease right-of-use assets	$ 34,325
Operating lease liabilities (current)	5,818
Operating lease liabilities (noncurrent)	30,307
Total lease liabilities	$ 36,125

Leases - Lease Costs (Details)

Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 1,943	$ 4,961
Short-term lease cost	339	1,053
Variable lease cost	511	1,294
Total lease cost	$ 2,793	$ 7,308

Leases - Supplemental Informati

Leases - Supplemental Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 4,468
Weighted-average remaining lease term (in years)	6 years 2 months 12 days
Weighted-average discount rate	6.20%

Leases - Undiscounted Cash Flow

Leases - Undiscounted Cash Flows (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Remainder of 2019	$ 1,884
2020	7,989
2021	7,477
2022	6,894
2023	5,535
2024	5,317
Thereafter	9,075
Total minimum lease payments	44,171
Less imputed interest	(8,046)
Present value of future minimum lease payments	36,125
Less current obligations under leases	(5,818)
Operating lease liabilities	$ 30,307

Leases - Minimum Payments Prior

Leases - Minimum Payments Prior to Adoption of ASC 842 (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 6,389
2020	6,781
2021	6,326
2022	6,276
2023	5,163
Thereafter	9,427
Total minimum lease payments	$ 40,362

Contingencies (Details)

Contingencies (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Indemnification
Commitments And Contingencies [Line Items]
Loss contingency accrual	$ 0	$ 0

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision for Income Taxes and Effective Tax Rates (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Benefit of income taxes	$ (8,663)	$ (2,643)	$ (26,456)	$ (5,507)
Effective tax rate	(58.10%)	32.30%	(88.20%)	92.20%
Discrete tax benefit related to excess tax benefits from stock option deductions			$ 19,300

Basic and Diluted Net Income _3

Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
Numerator:
Net income (loss) attributable to common stockholders	$ (6,240)	$ 10,821	$ (3,545)	$ 11,479
Denominator:
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic	63,966,000	61,103,000	62,842,000	60,618,000
Effect of dilutive securities:
Convertible senior notes	0	672,000	0	226,000
Contingently issuable shares (in shares)	0	21,000	0	25,000
Employee stock awards (in shares)	0	3,763,000	0	3,432,000
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, diluted	63,966,000	65,559,000	62,842,000	64,301,000
Net income (loss) per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.10)	$ 0.18	$ (0.06)	$ 0.19
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ (0.10)	$ 0.17	$ (0.06)	$ 0.18
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from calculation of earnings per share (in shares)	10,198,000	35,000	10,110,000	661,000
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from calculation of earnings per share (in shares)	3,023,000	23,000	3,356,000	504,000
Unvested restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from calculation of earnings per share (in shares)	1,460,000	12,000	1,388,000	157,000
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from calculation of earnings per share (in shares)	5,715,000	0	5,366,000	0
Convertible Senior Notes | Convertible Senior Note due 2023, 0.5%
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Initial Conversion Price	$ 44.33		$ 44.33		$ 44.33
Convertible Senior Notes | Convertible Senior Notes due 2024 & 2026, 0.50%, 1.0%
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Initial Conversion Price	$ 189.36		$ 189.36

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event $ in Millions	Oct. 03, 2019USD ($)	Oct. 31, 2019ft²
Subsequent Event [Line Items]
Lessee, operating lease, square footage | ft²		180,000
Lessee, operating lease, term of contract		84 months
Lessee, operating lease, number of extension periods		2
Lessee, operating lease, renewal term of contract		60 months
Feature Labs Inc.
Subsequent Event [Line Items]
Business combination acquired percentage	100.00%
Total consideration	$ 25.5
Share-based compensation agreement, value, shares issued	$ 12.5

Uncategorized Items - ayx093020

Label	Element	Value
Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 64,197,000
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	64,197,000
Accounting Standards Update, All Other [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,438,000)
Accounting Standards Update, All Other [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,579,000)
Accounting Standards Update, All Other [Member] | Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 141,000