Segment Reporting - Revenue and EBITDA from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting
Revenue	$ 99,602	$ 82,702	$ 281,913	$ 228,049
EBITDA	20,266	17,489	56,842	38,290
Debit and Credit
Segment Reporting
EBITDA	22,356	16,993	67,078	45,073
Prepaid Debit
Segment Reporting
EBITDA	9,040	8,332	24,719	16,974
Other
Segment Reporting
EBITDA	(11,130)	(7,836)	(34,955)	(23,757)
Operating Segments | Debit and Credit
Segment Reporting
Revenue	76,121	62,710	218,798	180,855
Operating Segments | Prepaid Debit
Segment Reporting
Revenue	23,498	20,604	63,339	48,680
Intersegment eliminations
Segment Reporting
Revenue	$ (17)	$ (612)	$ (224)	$ (1,486)