UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Revenue	$ 16,531	$ 16,083	$ 52,691	$ 46,028
Costs and operating expenses:
Cost of revenue, excluding depreciation and amortization	11,472	12,334	37,800	33,024
Product development	2,414	3,139	7,799	9,316
Sales and marketing	1,283	2,297	4,658	8,329
General and administrative	8,104	8,190	22,671	24,489
Acquisition costs	0	10	0	3,442
Depreciation and amortization	2,707	3,389	8,105	9,132
Total cost and operating expenses	25,980	29,359	81,033	87,732
Operating loss	(9,449)	(13,276)	(28,342)	(41,704)
Nonoperating expenses, net	17,528	12,237	22,003	14,797
Loss before income taxes	(26,977)	(25,513)	(50,345)	(56,501)
Income tax expense (benefit)	30	(394)	(51)	(758)
Net loss	(27,007)	(25,119)	(50,294)	(55,743)
Accrued dividends and accretion of redemption premium on Redeemable Preferred Stock	169	0	(169)	0
Net loss attributable to common equity	$ (27,176)	$ (25,119)	$ (50,125)	$ (55,743)
Net loss per share – basic and diluted	$ (0.19)	$ (0.22)	$ (0.36)	$ (0.51)
Weighted average shares outstanding during the period – basic and diluted	138,820,058	113,579,298	138,628,605	109,443,353
Other comprehensive income (loss):
Foreign currency translation gain (loss)	$ 573	$ (5,486)	$ 842	$ (6,805)
Comprehensive loss	$ (26,434)	$ (30,605)	$ (49,452)	$ (62,548)