Condensed Consolidated Statements of Cash Flows (Statement) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net income	$ 44,894	$ (6,826)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	3,469	1,497
Non-cash lease expense related to operating lease right-of-use assets	281	494
Stock-based compensation	7,557	225
Gain on change in fair value of earn-out liability	(75,500)	0
Changes in assets and liabilities:
Accounts receivable and unbilled services, net (including amounts with related parties)	566	2,139
Prepaid expenses and other current assets	(571)	(845)
Other assets	1	(142)
Accounts payable	(5,294)	(1,954)
Accrued expenses and other current liabilities	(3,255)	(2,213)
Deferred revenue	(145)	525
Operating lease liabilities	(145)	(216)
Other, net	159	229
Net cash used in operating activities	(27,983)	(7,087)
Investing activities
Capitalization of software development costs	(7,035)	(2,298)
Purchases of fixed assets	(146)	(111)
Net cash used in investing activities	(7,181)	(2,409)
Financing activities
Cash received from stock option exercises	114	63
Net cash provided by financing activities	114	63
Net decrease in cash, cash equivalents, and restricted cash	(35,050)	(9,433)
Cash, cash equivalents, and restricted cash, beginning of period	214,601	33,483
Cash, cash equivalents, and restricted cash, end of period	179,551	24,050
Supplemental disclosures of non-cash activities
Balance in accounts payable and accrued expenses and other current liabilities related to capitalized software and fixed asset additions	(4,101)	(742)
Balance in prepaid expenses and other current assets related to stock option exercises	$ 17	$ 269