Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Total Revenue		$ 71,783	$ 67,435	$ 146,320	$ 134,999
Elimination of Intersegment Revenues
Revenue
Total Revenue	[1]	(3,970)	(2,332)	(8,048)	(4,741)
Consumer Payments
Revenue
Total Revenue		65,924	59,833	135,865	120,914
Business Payments
Revenue
Total Revenue		9,829	9,934	18,503	18,826
Direct Relationships
Revenue
Total Revenue		68,459	63,846	139,288	127,483
Direct Relationships | Elimination of Intersegment Revenues
Revenue
Total Revenue		(3,970)	(2,332)	(8,048)	(4,741)
Direct Relationships | Consumer Payments
Revenue
Total Revenue		62,899	56,504	129,373	113,940
Direct Relationships | Business Payments
Revenue
Total Revenue		9,530	9,674	17,964	18,284
Indirect Relationships
Revenue
Total Revenue		3,324	3,589	7,032	7,516
Indirect Relationships | Consumer Payments
Revenue
Total Revenue		3,025	3,329	6,492	6,974
Indirect Relationships | Business Payments
Revenue
Total Revenue		$ 299	$ 260	$ 539	$ 542

[1] Represents intercompany eliminations between segments for consolidation purpose.