Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Number of reportable segments | segment	2
Revenues:
Subscription, transaction, and services	$ 37,049	$ 33,119
Reimbursable costs	8,582	8,817
Total revenues	45,631	41,936
Cost of revenues:
Cost of subscription, transaction, and services revenue	10,325	9,253
Cost of reimbursable costs	8,582	8,817
Total cost of revenues, excluding depreciation and amortization	18,907	18,070
Gross profit:
Total segment gross profit (loss)	$ 26,724	$ 23,866
Total segment gross margin	59.00%	57.00%
Subscription, transaction, and services gross margin	72.00%	72.00%
Unallocated amounts:
Sales, marketing, research, development, and administrative expenses	$ 40,549	$ 32,379
Depreciation and amortization	1,861	1,360
Impairment and restructuring	13,854	0
Other income (expense)	(88)	12,829
Loss before income taxes	(29,452)	(22,702)
Subscription and transaction fees
Revenues:
Subscription, transaction, and services	34,102	30,183
Services and other
Revenues:
Subscription, transaction, and services	2,947	2,936
Operating segments | Print
Revenues:
Subscription, transaction, and services	4,241	4,498
Reimbursable costs	8,582	8,817
Total revenues	12,823	13,315
Cost of revenues:
Cost of subscription, transaction, and services revenue	1,549	1,926
Cost of reimbursable costs	8,582	8,817
Total cost of revenues, excluding depreciation and amortization	10,131	10,743
Gross profit:
Total segment gross profit (loss)	$ 2,692	$ 2,572
Total segment gross margin	21.00%	19.00%
Subscription, transaction, and services gross margin	63.00%	57.00%
Operating segments | Print | Subscription and transaction fees
Revenues:
Subscription, transaction, and services	$ 4,241	$ 4,498
Operating segments | Print | Services and other
Revenues:
Subscription, transaction, and services	0	0
Operating segments | Software and Payments
Revenues:
Subscription, transaction, and services	29,861	25,685
Reimbursable costs	0	0
Total revenues	29,861	25,685
Cost of revenues:
Cost of subscription, transaction, and services revenue	4,602	3,711
Cost of reimbursable costs	0	0
Total cost of revenues, excluding depreciation and amortization	4,602	3,711
Gross profit:
Total segment gross profit (loss)	$ 25,259	$ 21,974
Total segment gross margin	85.00%	86.00%
Subscription, transaction, and services gross margin	85.00%	86.00%
Operating segments | Software and Payments | Subscription and transaction fees
Revenues:
Subscription, transaction, and services	$ 29,861	$ 25,685
Operating segments | Software and Payments | Services and other
Revenues:
Subscription, transaction, and services	0	0
All other
Revenues:
Subscription, transaction, and services	2,947	2,936
Reimbursable costs	0	0
Total revenues	2,947	2,936
Cost of revenues:
Cost of subscription, transaction, and services revenue	4,174	3,616
Cost of reimbursable costs	0	0
Total cost of revenues, excluding depreciation and amortization	4,174	3,616
Gross profit:
Total segment gross profit (loss)	$ (1,227)	$ (680)
Total segment gross margin	(42.00%)	(23.00%)
Subscription, transaction, and services gross margin	(42.00%)	(23.00%)
All other | Subscription and transaction fees
Revenues:
Subscription, transaction, and services	$ 0	$ 0
All other | Services and other
Revenues:
Subscription, transaction, and services	$ 2,947	$ 2,936