Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue
Total Revenue		$ 74,906	$ 71,783	$ 155,626	$ 146,320
Elimination of Intersegment Revenues
Revenue
Total Revenue	[1]	(4,978)	(3,970)	(10,071)	(8,048)
Consumer Payments | Operating Segments
Revenue
Total Revenue		69,292	65,924	145,428	135,865
Business Payments | Operating Segments
Revenue
Total Revenue		10,592	9,829	20,269	18,503
Direct Relationships
Revenue
Total Revenue		72,171	68,459	149,860	139,289
Direct Relationships | Elimination of Intersegment Revenues
Revenue
Total Revenue		(4,978)	(3,970)	(10,071)	(8,048)
Direct Relationships | Consumer Payments | Operating Segments
Revenue
Total Revenue		66,775	62,899	140,086	129,373
Direct Relationships | Business Payments | Operating Segments
Revenue
Total Revenue		10,374	9,530	19,845	17,964
Indirect Relationships
Revenue
Total Revenue		2,735	3,324	5,766	7,031
Indirect Relationships | Consumer Payments | Operating Segments
Revenue
Total Revenue		2,517	3,025	5,342	6,492
Indirect Relationships | Business Payments | Operating Segments
Revenue
Total Revenue		$ 218	$ 299	$ 424	$ 539

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