Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (47,305)	$ (61,174)	$ (94,796)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	58,815	60,600	53,168
Amortization of deferred costs	19,568	18,251	14,373
Deferred income taxes	(1,912)	(5,183)	(12,972)
Accretion of interest on convertible senior notes	2,640	4,561	35,271
(Gain) loss on disposal of assets	(708)	727	(82)
(Gain) loss on extinguishment of debt, capped call modification and change in fair value	(12,658)	(19,243)	(7,181)
Provision for credit losses and sales reserve	2,001	410	4,750
Stock-based compensation	48,889	47,620	44,095
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			(240)
Change in operating assets and liabilities:
Accounts receivable	(1,064)	(848)	(18,187)
Prepaid expenses	984	560	(478)
Deferred costs	(28,562)	(23,063)	(16,793)
Other assets	947	(3,527)	(1,172)
Accounts payable	4,187	(4,855)	3,772
Accrued payroll and employee related liabilities	1,649	(4,136)	2,687
Accrued expenses	21,741	992	3,088
Deferred revenue	6,878	8,746	26,595
Other liabilities	(3,515)	(214)	(4,006)
Net cash provided by operating activities	72,575	20,167	22,193
Cash flows from investing activities:
Capital expenditures	(5,217)	(3,462)	(5,055)
Proceeds from landlord reimbursement	88	1,219
Proceeds from sale of assets	4,368
Payments for acquisition of business, net of acquired cash		(1,585)	(262,084)
Additions to capitalized software development costs	(16,540)	(15,065)	(14,697)
Net cash used in investing activities	(17,301)	(18,893)	(281,836)
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	(129,579)	(288,761)	(58,643)
Proceeds from termination of convertible notes capped call hedge	33	1,312	10,650
Payments of contingent consideration obligation			(2,540)
Payments associated with shares withheld to settle employee tax withholding liability	(7,885)	(6,307)	(10,085)
Proceeds from employee stock purchase plan	4,291	3,165	4,587
Proceeds from option exercises	1,319	144	3,113
Other	(77)	(73)	2
Net cash provided by (used in) financing activities	(131,898)	(290,520)	276,344
Effect of exchange rates on cash, cash equivalents and restricted cash	401	(1,918)	427
Net increase (decrease) in cash, cash equivalents and restricted cash	(76,223)	(291,164)	17,128
Cash, cash equivalents and restricted cash—beginning of year	201,594	492,758	475,630
Cash, cash equivalents and restricted cash—end of year	125,371	201,594	492,758
Supplemental disclosures of cash flow information:
Interest	1,175	556	894
Taxes, net of refunds received	5,888	1,716	1,543
Supplemental disclosure of non-cash activities
Common stock issued in connection with acquisitions			169,541
Contingent consideration in connection with acquisitions			9,195
Common stock issued in connection with contingent consideration payment			7,177
Purchase accounting payable, net			1,492
Common stock issued in connection with settlement of convertible notes			17,109
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	(399)	(963)	(3,027)
Capitalized assets included in accounts payable and accrued expenses	201	349	1,622
Capitalized development costs included in accounts payable and accrued expenses	280
Stock-based compensation capitalized for software development	3,782	2,093	$ 589
Treasury stock retired		$ 700
Other non-cash activities	$ 192