Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue
Net Sales	$ 99,602	$ 82,702	$ 281,913	$ 228,049
Operating Segments | Debit and Credit
Disaggregation of Revenue
Net Sales	76,121	62,710	218,798	180,855
Operating Segments | Prepaid Debit
Disaggregation of Revenue
Net Sales	23,498	20,604	63,339	48,680
Intersegment eliminations
Disaggregation of Revenue
Net Sales	(17)	(612)	(224)	(1,486)
Products
Disaggregation of Revenue
Net Sales	52,276	43,462	146,445	125,040
Products | Operating Segments | Debit and Credit
Disaggregation of Revenue
Net Sales	52,292	44,056	146,651	126,507
Products | Intersegment eliminations
Disaggregation of Revenue
Net Sales	(16)	(594)	(206)	(1,467)
Services
Disaggregation of Revenue
Net Sales	47,326	39,240	135,468	103,009
Services | Operating Segments | Debit and Credit
Disaggregation of Revenue
Net Sales	23,829	18,654	72,147	54,348
Services | Operating Segments | Prepaid Debit
Disaggregation of Revenue
Net Sales	23,498	20,604	63,339	48,680
Services | Intersegment eliminations
Disaggregation of Revenue
Net Sales	$ (1)	$ (18)	$ (18)	$ (19)