Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Subscription, transaction, and services	$ 131,574	$ 108,569	$ 96,460
Reimbursable costs	34,831	37,116	40,008
Total revenues	166,405	145,685	136,468
Cost of revenues:
Cost of subscription, transaction, and services	37,043	32,531	32,015
Cost of reimbursable costs	34,831	37,116	40,008
Total cost of revenues, excluding depreciation and amortization	71,874	69,647	72,023
Operating expenses:
Research and development	50,127	36,468	34,285
Sales and marketing	39,624	23,420	22,098
General and administrative	48,282	22,188	23,297
Depreciation and amortization	5,516	5,624	5,881
Total operating expenses	143,549	87,700	85,561
Loss from operations	(49,018)	(11,662)	(21,116)
Interest income	440	18	1
Interest expense and loss on extinguishment of debt	(2,952)	(4,661)	(1,507)
Change in fair value of financial instruments and other expense	(9,783)	(518)	(21)
Total other expense	(12,295)	(5,161)	(1,527)
Loss before income taxes	(61,313)	(16,823)	(22,643)
Income tax expense (benefit)	(113)	204	160
Net loss	$ (61,200)	$ (17,027)	$ (22,803)
Net loss per common share, basic (in USD per share)	$ (0.39)	$ (0.17)	$ (0.23)
Net loss per common share, diluted (in USD per share)	$ (0.39)	$ (0.17)	$ (0.23)
Weighted average common shares outstanding, basic (in shares)	155,066	100,023	99,272
Weighted average common shares outstanding, diluted (in shares)	155,066	100,023	99,272