CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue	$ 75,405	$ 58,853	$ 143,333	$ 112,083
Costs and expenses:
Partner Share and other third-party costs	40,280	29,953	75,433	59,724
Delivery costs	8,162	5,748	14,695	9,686
Sales and marketing expense	21,983	17,063	39,631	30,265
Research and development expense	13,581	8,934	25,872	15,152
General and administration expense	20,984	16,888	41,409	29,063
Acquisition and integration costs (benefit)	2,197	14,182	(2,401)	21,212
Change in fair value of contingent consideration	(2,968)	1,480	(68,018)	1,480
Goodwill impairment	83,149	0	83,149	0
Depreciation and amortization expense	10,356	8,833	20,227	11,898
Total costs and expenses	197,724	103,081	229,997	178,480
Operating Income (Loss), Total	(122,319)	(44,228)	(86,664)	(66,397)
Other (expense) income:
Interest expense, net	(879)	(3,078)	(1,826)	(6,123)
Foreign currency (loss) gain	(4,538)	0	(6,208)	319
Total other expense	(5,417)	(3,078)	(8,034)	(5,804)
Loss before income taxes	(127,736)	(47,306)	(94,698)	(72,201)
Income tax benefit	1,446	0	1,446	0
Net Income (Loss) Attributable to Parent, Total	(126,290)	(47,306)	(93,252)	(72,201)
Net Income (Loss) Available to Common Stockholders, Basic, Total	$ (126,290)	$ (47,306)	$ (93,252)	$ (72,201)
Net loss per share attributable to common stockholders, diluted (in USD per share)	$ (3.75)	$ (1.43)	$ (2.77)	$ (2.32)
Weighted-average common shares outstanding, diluted (in shares)	33,635,000	32,977,000	33,688,000	31,145,000