Operating Segment and Enterprise Wide Reporting (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 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	$ 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
Gross Profit [Abstract]
Total segment gross profit (loss)	$ 94,531	$ 76,038	$ 64,445
Total segment gross margin	57.00%	52.00%	47.00%
Subscription, transaction, and services gross margin	72.00%	70.00%	67.00%
Unallocated amounts:
Sales, marketing, research, development, and administrative expenses	$ 138,033	$ 82,076	$ 79,680
Depreciation and amortization	5,516	5,624	5,881
Interest, loss on extinguishment of debt, changes in fair value of financial instruments, and other expenses	12,295	5,161	1,527
Loss before income taxes	(61,313)	(16,823)	(22,643)
Subscription and transaction
Revenues:
Subscription, transaction, and services	121,321	99,609	89,476
Services and other
Revenues:
Subscription, transaction, and services	10,253	8,960	6,984
Operating segments | Print
Revenues:
Subscription, transaction, and services	17,444	18,445	20,612
Reimbursable costs	34,831	37,116	40,008
Total revenues	52,275	55,561	60,620
Cost of revenues:
Cost of subscription, transaction, and services	6,880	8,492	9,642
Cost of reimbursable costs	34,831	37,116	40,008
Total cost of revenues, excluding depreciation and amortization	41,711	45,608	49,650
Gross Profit [Abstract]
Total segment gross profit (loss)	$ 10,564	$ 9,953	$ 10,970
Total segment gross margin	20.00%	18.00%	18.00%
Subscription, transaction, and services gross margin	61.00%	54.00%	53.00%
Operating segments | Print | Subscription and transaction
Revenues:
Subscription, transaction, and services	$ 17,444	$ 18,445	$ 20,612
Operating segments | Print | Services and other
Revenues:
Subscription, transaction, and services	0	0	0
Operating segments | Software and Payments
Revenues:
Subscription, transaction, and services	103,877	81,164	68,864
Reimbursable costs	0	0	0
Total revenues	103,877	81,164	68,864
Cost of revenues:
Cost of subscription, transaction, and services	15,429	12,571	11,900
Cost of reimbursable costs	0	0	0
Total cost of revenues, excluding depreciation and amortization	15,429	12,571	11,900
Gross Profit [Abstract]
Total segment gross profit (loss)	$ 88,448	$ 68,593	$ 56,964
Total segment gross margin	85.00%	85.00%	83.00%
Subscription, transaction, and services gross margin	85.00%	85.00%	83.00%
Operating segments | Software and Payments | Subscription and transaction
Revenues:
Subscription, transaction, and services	$ 103,877	$ 81,164	$ 68,864
Operating segments | Software and Payments | Services and other
Revenues:
Subscription, transaction, and services	0	0	0
All other
Revenues:
Subscription, transaction, and services	10,253	8,960	6,984
Reimbursable costs	0	0	0
Total revenues	10,253	8,960	6,984
Cost of revenues:
Cost of subscription, transaction, and services	14,734	11,468	10,473
Cost of reimbursable costs	0	0	0
Total cost of revenues, excluding depreciation and amortization	14,734	11,468	10,473
Gross Profit [Abstract]
Total segment gross profit (loss)	$ (4,481)	$ (2,508)	$ (3,489)
Total segment gross margin	(44.00%)	(28.00%)	(50.00%)
Subscription, transaction, and services gross margin	(44.00%)	(28.00%)	(50.00%)
All other | Subscription and transaction
Revenues:
Subscription, transaction, and services	$ 0	$ 0	$ 0
All other | Services and other
Revenues:
Subscription, transaction, and services	$ 10,253	$ 8,960	$ 6,984