CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 79,005	$ 72,706	$ 220,037	$ 216,039
Costs and expenses:
Partner Share and other third-party costs	36,144	37,563	108,698	112,996
Delivery costs	7,012	9,125	20,451	23,820
Sales and marketing expense	14,161	18,289	43,314	57,920
Research and development expense	12,430	13,762	38,841	39,634
General and administration expense	15,561	19,972	44,907	61,381
Acquisition and integration (benefit) cost	78	(1,867)	(8,146)	(4,269)
(Gain) loss in fair value of contingent consideration	8,281	(46,126)	(15,045)	(114,144)
Goodwill impairment	0	0	0	83,149
Depreciation and amortization expense	5,990	10,468	19,765	30,695
Total costs and expenses	99,657	61,186	252,785	291,182
Operating Income (Loss), Total	(20,652)	11,520	(32,748)	(75,143)
Other expense:
Interest expense, net	(915)	(580)	(1,497)	(2,406)
Foreign currency (loss) gain	(2,399)	(4,673)	379	(10,882)
Total other expense	(3,314)	(5,253)	(1,118)	(13,288)
Income (loss) before income taxes	(23,966)	6,267	(33,866)	(88,431)
Income tax benefit	0	0	0	1,446
Net Income (Loss) Attributable to Parent, Total	(23,966)	6,267	(33,866)	(86,985)
Net Income (Loss) Available to Common Stockholders, Basic, Total	$ (23,966)	$ 6,267	$ (33,866)	$ (86,985)
Net loss per share attributable to common stockholders, basic (in USD per share)	$ (0.63)	$ 0.19	$ (0.95)	$ (2.60)
Weighted-average common shares outstanding, basic (in shares)	37,982,000	32,950,000	35,502,000	33,455,000