CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net loss	$ (47,306)	$ (19,758)	$ (72,201)	$ (33,289)
Adjustments to reconcile net loss to net cash used in operating activities:
Credit loss expense			1,156	1,326
Depreciation and amortization			11,898	3,876
Amortization of financing costs charged to interest expense			448	48
Accretion of debt discount and non-cash interest expense	4,680	0
Amortization of right-of-use assets			2,354	1,731
Termination of U.K. agreement expense			20,585	13,233
Other non-cash expense (income), net			(279)	2,073
Amortization of deferred implementation costs	730	991	1,612	1,999
Change in operating assets and liabilities:
Accounts receivable			10,209	42,460
Prepaid expenses and other assets			(1,896)	(603)
Accounts payable			2,021	(163)
Other accrued expenses			2,021	(6,922)
Partner Share liability			(8,768)	(22,665)
Consumer Incentive liability			(2,830)	(10,748)
Net cash used in operating activities			(27,510)	(7,644)
Investing activities
Acquisition of property and equipment			(1,790)	(1,225)
Acquisition of patents			(58)	(30)
Capitalized software development costs			(4,431)	(2,132)
Business acquisition, net of cash acquired	(494,131)	0
Net cash used in investing activities			(500,410)	(3,387)
Financing activities
Principal payments of debt			(11)	(11)
Proceeds from issuance of common stock			485,690	5,435
Deferred equity issuance costs			(190)	0
Debt issuance costs			(86)	(13)
Net cash received from financing activities			485,403	5,411
Effect of exchange rates on cash, cash equivalents and restricted cash			(118)	(492)
Net decrease in cash, cash equivalents and restricted cash			(42,635)	(6,112)
Cash, cash equivalents, and restricted cash — Beginning of period			293,349	104,587
Cash, cash equivalents, and restricted cash — End of period	250,714	98,475	250,714	98,475
Cash and cash equivalents	250,603	98,370	250,603	98,370
Restricted cash	111	105	111	105
Total cash, cash equivalents and restricted cash — End of period	250,714	98,475	250,714	98,475
Supplemental schedule of non-cash investing and financing activities:
Cash paid for interest			1,139	32
Amounts accrued for property and equipment and capitalized software development costs	$ 390	$ 452	$ 390	$ 452