Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (77,335)	$ (84,288)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	45,253	38,080
Amortization of deferred costs	13,365	10,398
Deferred income taxes	(7,132)	(11,232)
Accretion of interest on convertible senior notes	3,492	25,470
Loss on disposal of assets	940
Loss on extinguishment of convertible notes, capped call modification and change in fair value	4,770	2,925
Provision for credit losses and sales reserve	(712)	2,679
Stock-based compensation	39,702	45,631
Change in fair value of contingent consideration obligation	(57)	(7,046)
Payment of contingent consideration in excess of acquisition date fair value		(2,653)
Other non-cash adjustments		13
Changes in operating assets and liabilities:
Accounts receivable	28,760	16,020
Prepaid expenses	17	93
Deferred costs	(16,157)	(11,387)
Other assets	7,591	(6,525)
Accounts payable	(3,172)	(3,535)
Accrued payroll and employee related liabilities	(6,919)	(3,812)
Accrued expenses	(637)	2,836
Deferred revenue	(4,678)	3,744
Other liabilities	(11,278)	(5,430)
Net cash provided by operating activities	15,813	11,981
Cash flows from investing activities:
Capital expenditures	(2,951)	(4,170)
Proceeds from landlord reimbursement	1,219
Payment for acquisition of business, net of acquired cash	(1,249)	(199,679)
Additions to capitalized software development costs	(11,609)	(8,879)
Net cash used in investing activities	(14,590)	(212,728)
Cash flows from financing activities:
Proceeds from issuance of convertible notes		375,000
Payments of debt issuance costs		(10,640)
Purchase of convertible notes capped call hedge		(35,100)
Repurchase of convertible notes		(58,641)
Proceeds from termination of convertible notes capped call hedge		10,650
Payment of contingent consideration		(2,540)
Stock award shares withheld to settle employee tax withholding liability	(4,208)	(6,399)
Proceeds from employee stock purchase plan	3,165	4,587
Proceeds from stock option exercises	99	2,947
Other	(55)
Net cash provided by (used in) financing activities	(999)	279,864
Effect of exchange rates on cash, cash equivalents and restricted cash	(3,309)	219
Net increase (decrease) in cash, cash equivalents and restricted cash	(3,085)	79,336
Cash, cash equivalents and restricted cash—beginning of period	492,758	475,630	$ 475,630
Cash, cash equivalents and restricted cash—end of period	489,673	554,966	$ 492,758
Supplemental disclosures of cash flow information:
Interest	281	610
Taxes, net of refunds received	1,545	1,564
Supplemental disclosure of non-cash activities:
Common stock issued in connection with acquisition		89,287
Contingent consideration in connection with acquisition		9,135
Common stock issued in connection with contingent consideration payment		7,177
Common stock issued in connection with settlement of convertible notes		16,826
Modification of 2022 Notes capped call option and resulting reclassification from equity to derivative asset	6,090
Stock-based compensation capitalized for software development costs	1,675	406
Other non-cash activities	$ 156	$ 365