Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Subscription, transaction, and services	$ 40,600	$ 31,589	$ 77,649	$ 64,708
Reimbursable costs	8,676	8,643	17,258	17,460
Total revenues	49,276	40,232	94,907	82,168
Cost of revenues:
Cost of subscription, transaction, and services	11,150	9,360	21,474	18,613
Cost of reimbursable costs	8,676	8,643	17,258	17,460
Total cost of revenues, excluding depreciation and amortization	19,826	18,003	38,732	36,073
Operating expenses:
Research and development	15,874	11,270	30,979	22,263
Sales and marketing	11,723	9,980	22,439	18,916
General and administrative	15,085	10,478	29,813	22,928
Depreciation and amortization	2,166	1,359	4,027	2,719
Impairment and restructuring	30	0	13,884	0
Total operating expenses	44,878	33,087	101,142	66,826
Loss from operations	(15,428)	(10,858)	(44,967)	(20,731)
Change in fair value of financial instruments	(260)	0	(238)	(9,995)
Interest expense and loss on extinguishment of debt	(6)	(3)	(7)	(2,945)
Other non-operating income	188	136	255	244
Total other income (expense)	(78)	133	10	(12,696)
Loss before income taxes	(15,506)	(10,725)	(44,957)	(33,427)
Income tax expense (benefit)	(295)	11	(719)	103
Net loss	$ (15,211)	$ (10,736)	$ (44,238)	$ (33,530)
Net loss per common share, basic (USD per share)	$ (0.09)	$ (0.07)	$ (0.27)	$ (0.22)
Net loss per common share, diluted (USD per share)	$ (0.09)	$ (0.07)	$ (0.27)	$ (0.22)
Weighted average common shares outstanding, basic (shares)	163,596	157,197	163,287	151,289
Weighted average common shares outstanding, diluted (shares)	163,596	157,197	163,287	151,289
Operating segments | Print
Revenues:
Subscription, transaction, and services	$ 4,334	$ 4,490	$ 8,575	$ 8,988
Reimbursable costs	8,676	8,643	17,258	17,460
Total revenues	13,010	13,133	25,833	26,448
Cost of revenues:
Cost of subscription, transaction, and services	1,583	1,900	3,174	3,826
Cost of reimbursable costs	8,676	8,643	17,258	17,460
Total cost of revenues, excluding depreciation and amortization	$ 10,259	$ 10,543	$ 20,432	$ 21,286