Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (61,174)	$ (94,796)	$ (93,396)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	60,600	53,168	30,759
Amortization of deferred costs	18,251	14,373	12,609
Deferred income taxes	(5,183)	(12,972)	(3,478)
Accretion of interest on convertible senior notes	4,561	35,271	22,161
(Gain) loss on disposal of assets	727	(82)	5
(Gain) loss on extinguishment of debt, capped call modification and change in fair value	(19,243)	(7,181)	446
Provision for credit losses and sales reserve	410	4,750	3,071
Stock-based compensation	47,620	44,095	46,755
Change in fair value of contingent consideration obligation	(57)	(7,046)	3,665
Payment of contingent consideration in excess of acquisition date fair value		(2,653)
Other non-cash adjustments		(240)	73
Change in operating assets and liabilities:
Accounts receivable	(848)	(18,187)	(22,614)
Prepaid expenses	560	(478)	(3,983)
Deferred costs	(23,063)	(16,793)	(18,902)
Other assets	(3,527)	(1,172)	146
Accounts payable	(4,855)	3,772	1,547
Accrued payroll and employee related liabilities	(4,136)	2,687	3,499
Accrued expenses	992	3,088	1,057
Deferred revenue	8,746	26,595	24,964
Other liabilities	(214)	(4,006)	7,419
Net cash provided by operating activities	20,167	22,193	15,803
Cash flows from investing activities:
Capital expenditures	(3,462)	(5,055)	(3,257)
Proceeds from landlord reimbursement	1,219
Payments for acquisition of business, net of acquired cash	(1,585)	(262,084)	(55,138)
Additions to capitalized software development costs	(15,065)	(14,697)	(9,651)
Purchase of intangibles			(17,139)
Net cash used in investing activities	(18,893)	(281,836)	(85,185)
Cash flows from financing activities:
Proceeds from issuance of convertible notes		375,000
Payments of debt issuance costs		(10,640)	(131)
Purchase of convertible notes capped call hedge		(35,100)
Repurchase of convertible notes	(288,761)	(58,643)
Proceeds from termination of convertible notes capped call hedge	1,312	10,650
Payments of contingent consideration obligation		(2,540)
Payments associated with shares withheld to settle employee tax withholding liability	(6,306)	(10,083)	(6,364)
Proceeds from employee stock purchase plan	3,165	4,587	3,389
Proceeds from option exercises	144	3,113	8,160
Other	(74)
Net cash provided by (used in) financing activities	(290,520)	276,344	5,054
Effect of exchange rates on cash, cash equivalents and restricted cash	(1,918)	427	296
Net increase (decrease) in cash, cash equivalents and restricted cash	(291,164)	17,128	(64,032)
Cash, cash equivalents and restricted cash—beginning of year	492,758	475,630	539,662
Cash, cash equivalents and restricted cash—end of year	201,594	492,758	475,630
Supplemental disclosures of cash flow information:
Interest	556	894	1,938
Taxes, net of refunds received	1,716	1,543	706
Supplemental disclosure of non-cash activities
Common stock issued in connection with acquisitions		169,541	53,193
Deferred consideration in connection with acquisition			4,044
Contingent consideration in connection with acquisitions		9,195	6,267
Common stock issued in connection with contingent consideration payment		7,177
Purchase accounting payable, net		1,492	(163)
Common stock issued in connection with settlement of convertible notes		17,109	11,375
Modification of 2022 Notes capped call options and resulting reclassification from equity to derivative asset	6,090
Common stock received in connection with settlement of capped call options	700
Purchased intangible asset decrease	(963)	(3,027)
Capitalized assets included in accounts payable and accrued expenses	349	1,622	291
Stock-based compensation capitalized for software development	2,093	$ 589	$ 324
Treasury stock retired	$ 700