Net Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue
Net Sales	$ 278,073	$ 255,814
Operating Segments | U.S. Debit and Credit
Disaggregation of Revenue
Net Sales	213,141	178,597
Operating Segments | U.S. Prepaid Debit
Disaggregation of Revenue
Net Sales	64,330	69,199
Operating Segments | Other
Disaggregation of Revenue
Net Sales	1,679	9,891
Intersegment eliminations
Disaggregation of Revenue
Net Sales	(1,077)	(1,873)
Products
Disaggregation of Revenue
Net Sales	143,941	125,069
Products | Operating Segments | U.S. Debit and Credit
Disaggregation of Revenue
Net Sales	144,541	122,119
Products | Operating Segments | Other
Disaggregation of Revenue
Net Sales	396	4,398
Products | Intersegment eliminations
Disaggregation of Revenue
Net Sales	(996)	(1,448)
Services
Disaggregation of Revenue
Net Sales	134,132	130,745
Services | Operating Segments | U.S. Debit and Credit
Disaggregation of Revenue
Net Sales	68,600	56,478
Services | Operating Segments | U.S. Prepaid Debit
Disaggregation of Revenue
Net Sales	64,330	69,199
Services | Operating Segments | Other
Disaggregation of Revenue
Net Sales	1,283	5,493
Services | Intersegment eliminations
Disaggregation of Revenue
Net Sales	$ (81)	$ (425)