Segment Reporting - Revenue and EBITDA from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting
Total net sales	$ 122,761	$ 111,936
Depreciation and amortization	3,150	2,687
Total cost of sales	82,065	70,418
Gross profit	40,696	41,518
Operating expenses	26,592	27,373
Income from operations	14,104	14,145
EBITDA by segment:
Income (loss) from operations	14,104	14,145
Depreciation and amortization	4,247	4,017
Other income (expense)	18	(65)
EBITDA	$ 18,369	$ 18,097
Gross profit margin (as a percent)	33.20%	37.10%
EBITDA margin (as a percent)	15.00%	16.20%
Products
Segment Reporting
Total net sales	$ 69,175	$ 58,158
Products (exclusive of depreciation and amortization shown below)	46,285	37,802
Services
Segment Reporting
Total net sales	53,586	53,778
Products (exclusive of depreciation and amortization shown below)	32,630	29,929
Operating Segments | Debit and Credit
Segment Reporting
Total net sales	96,520	87,973
Depreciation and amortization	2,098	1,871
Total cost of sales	65,266	56,478
Gross profit	31,254	31,495
Operating expenses	9,551	8,741
Income from operations	21,703	22,754
EBITDA by segment:
Income (loss) from operations	21,703	22,754
Depreciation and amortization	2,271	2,150
Other income (expense)	(7)	(62)
EBITDA	$ 23,967	$ 24,842
Gross profit margin (as a percent)	32.40%	35.80%
EBITDA margin (as a percent)	24.80%	28.20%
Operating Segments | Prepaid Debit
Segment Reporting
Total net sales	$ 26,713	$ 24,198
Depreciation and amortization	1,052	816
Total cost of sales	17,271	14,175
Gross profit	9,442	10,023
Operating expenses	1,443	1,278
Income from operations	7,999	8,745
EBITDA by segment:
Income (loss) from operations	7,999	8,745
Depreciation and amortization	1,116	871
Other income (expense)	6	(1)
EBITDA	$ 9,121	$ 9,615
Gross profit margin (as a percent)	35.30%	41.40%
EBITDA margin (as a percent)	34.10%	39.70%
Operating Segments | Other
Segment Reporting
Operating expenses	$ 15,598	$ 17,354
Income from operations	(15,598)	(17,354)
EBITDA by segment:
Income (loss) from operations	(15,598)	(17,354)
Depreciation and amortization	860	996
Other income (expense)	19	(2)
EBITDA	(14,719)	(16,360)
Operating Segments | Products | Debit and Credit
Segment Reporting
Total net sales	69,625	58,371
Products (exclusive of depreciation and amortization shown below)	46,735	38,015
Operating Segments | Services | Debit and Credit
Segment Reporting
Total net sales	26,895	29,602
Products (exclusive of depreciation and amortization shown below)	16,433	16,592
Operating Segments | Services | Prepaid Debit
Segment Reporting
Total net sales	26,713	24,198
Products (exclusive of depreciation and amortization shown below)	16,219	13,359
Intersegment eliminations
Segment Reporting
Total net sales	(472)	(235)
Total cost of sales	(472)	(235)
Intersegment eliminations | Products
Segment Reporting
Total net sales	(450)	(213)
Products (exclusive of depreciation and amortization shown below)	(450)	(213)
Intersegment eliminations | Services
Segment Reporting
Total net sales	(22)	(22)
Products (exclusive of depreciation and amortization shown below)	$ (22)	$ (22)