Segment Information - Sales Details of Customers Locations in Four Geographic Regions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Segment Information
Revenue	$ 52,790	$ 52,277	$ 105,237	$ 103,052
Gross profit	$ 35,506	$ 34,831	$ 72,184	$ 69,073
Gross Margin	67.00%	67.00%	69.00%	67.00%
Operating income (loss)	$ (8,238)	$ (8,859)	$ (17,481)	$ (18,153)
Corporate operating expenses	43,744	43,690	89,665	87,226
Amortization	1,217	1,534	2,599	3,107
Operating loss	(8,238)	(8,859)	(17,481)	(18,153)
Interest income, net	35	2	18	6
Other income (expense), net	(675)	1,029	14,972	667
Loss before income taxes	(8,878)	(7,828)	$ (2,491)	(17,480)
Number of geographic regions | segment			2
Digital Agreements
Segment Information
Revenue	10,454	9,527	$ 23,755	19,591
Gross profit	$ 7,647	$ 6,626	$ 17,933	$ 14,080
Gross Margin	73.00%	70.00%	75.00%	72.00%
Operating income (loss)	$ 101	$ (795)	$ 1,789	$ (731)
Operating loss	101	(795)	1,789	(731)
Security Solutions
Segment Information
Revenue	42,336	42,750	81,482	83,461
Gross profit	$ 27,859	$ 28,205	$ 54,251	$ 54,993
Gross Margin	66.00%	66.00%	67.00%	66.00%
Operating income (loss)	$ 8,631	$ 10,035	$ 17,118	$ 16,599
Operating loss	8,631	10,035	17,118	16,599
Operating Segments
Segment Information
Operating income (loss)	8,732	9,240	18,907	15,868
Corporate operating expenses	15,753	16,573	33,789	30,922
Amortization	1,217	1,526	2,599	3,099
Operating loss	$ 8,732	$ 9,240	$ 18,907	$ 15,868