CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (75,189)	$ (24,082)	$ (34,345)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization expense	47,069	38,511	37,082
Amortization of deferred contract costs	12,534	7,953	5,236
Amortization of debt issuance costs	1,251	773	1,120
Non-cash lease expense	4,994	0	0
Provision for credit losses and returns	37	1,024	279
Loss on extinguishment of debt	449	5,213	0
Share‑based compensation	35,805	6,743	2,461
Deferred tax benefit	(5,644)	(10,318)	(11,169)
Adjustment to contingent consideration	6,037	(1,000)	200
Other	1,419	(490)	(292)
Changes in operating assets and liabilities:
Trade accounts receivable	(6,521)	(23,112)	(14,799)
Income tax receivable/payable	(611)	(766)	559
Prepaid expenses and other assets	(9,265)	(3,620)	(5,106)
Deferred contract costs	(24,795)	(20,398)	(14,045)
Accounts payable	2,069	4,026	1,000
Accrued liabilities	4,345	5,501	6,349
Deferred revenue	71,216	64,945	37,374
Other liabilities	(35)	1,898	(58)
Net cash provided by operating activities	65,165	52,801	11,846
Cash flows from investing activities
Acquisitions, net of cash acquired	(352,711)	(2,512)	(40,173)
Payment of deferred consideration	(25,000)	0	0
Purchases of equipment and leasehold improvements	(9,755)	(4,368)	(7,190)
Proceeds from sale of equipment and leasehold improvements	48	4	0
Net cash used in investing activities	(387,418)	(6,876)	(47,363)
Cash flows from financing activities
Proceeds from convertible senior notes	373,750	0	0
Proceeds from bank borrowings	250,000	0	40,000
Payment of bank borrowings	(250,000)	(205,000)	(10,000)
Payment for purchase of capped calls	(36,030)	0	0
Debt issuance costs	(13,134)	(1,264)	(1,550)
Payment of debt extinguishment costs	0	(2,050)	0
Proceeds from initial public offering, net of underwriting discounts and commissions	0	326,316	0
Cash paid for offering costs	(543)	(7,256)	(721)
Proceeds from private placement	0	2,233	0
Cash paid for contingent consideration	(4,206)	0	0
Payment of deferred consideration	(25,000)	0	0
Proceeds from the exercise of stock options	10,691	2,985	923
Net cash provided by financing activities	305,528	115,964	28,652
Effect of exchange rate changes on cash and cash equivalents	(993)	604	0
Net (decrease) increase in cash and cash equivalents	(17,718)	162,493	(6,865)
Cash and cash equivalents, beginning of period	194,868	32,375	39,240
Cash and cash equivalents, end of period	177,150	194,868	32,375
Cash paid for:
Interest	967	12,649	20,693
Income taxes, net of refunds	1,334	1,394	596
Non-cash activities:
Debt issuance costs accrued but not paid	50	0	0
Operating lease assets obtained in exchange for operating lease liabilities	1,470	0	0
Leasehold improvements acquired through lease incentives	$ 0	$ 0	$ 2,672