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Revenues - Schedule of Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenues	$ 262,256	$ 239,812	$ 511,814	$ 464,442
Other income, net	1,644	1,006	2,676	2,113
Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	174,008	162,788	334,286	314,029
Payables
Disaggregation of Revenue [Line Items]
Revenues	30,057	24,668	62,086	48,356
Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	58,191	52,356	115,442	102,057
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	266,727	240,921	519,794	466,617
Operating Segments \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	175,778	163,230	337,564	314,920
Operating Segments \| Payables
Disaggregation of Revenue [Line Items]
Revenues	30,430	25,033	62,871	48,951
Operating Segments \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	60,519	52,658	119,359	102,746
Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(4,471)	(1,109)	(7,980)	(2,175)
Eliminations \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	(1,770)	(442)	(3,278)	(891)
Eliminations \| Payables
Disaggregation of Revenue [Line Items]
Revenues	(373)	(365)	(785)	(595)
Eliminations \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	(2,328)	(302)	(3,917)	(689)
Merchant Card Fees
Disaggregation of Revenue [Line Items]
Revenues	199,093	180,483	385,026	347,562
Merchant Card Fees \| Operating Segments \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	171,917	158,825	330,416	306,307
Merchant Card Fees \| Operating Segments \| Payables
Disaggregation of Revenue [Line Items]
Revenues	26,932	21,488	54,127	41,257
Merchant Card Fees \| Operating Segments \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	3,844	968	7,121	1,575
Merchant Card Fees \| Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(3,600)	(798)	(6,638)	(1,577)
Money Transmission Services
Disaggregation of Revenue [Line Items]
Revenues	41,989	39,273	83,737	76,722
Money Transmission Services \| Operating Segments \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Money Transmission Services \| Operating Segments \| Payables
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Money Transmission Services \| Operating Segments \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	41,989	39,273	83,737	76,722
Money Transmission Services \| Eliminations
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Outsourced and Other Services
Disaggregation of Revenue [Line Items]
Revenues	18,855	16,853	38,681	33,855
Interest income	15,400	14,100	30,200	26,700
Other income, net	1,400	1,000	2,400	2,100
Outsourced and Other Services \| Operating Segments \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,542	1,202	2,778	2,310
Outsourced and Other Services \| Operating Segments \| Payables
Disaggregation of Revenue [Line Items]
Revenues	3,498	3,545	8,744	7,694
Outsourced and Other Services \| Operating Segments \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	14,686	12,417	28,501	24,449
Outsourced and Other Services \| Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(871)	(311)	(1,342)	(598)
Equipment
Disaggregation of Revenue [Line Items]
Revenues	2,319	3,203	4,370	6,303
Equipment \| Operating Segments \| Merchant Solutions
Disaggregation of Revenue [Line Items]
Revenues	2,319	3,203	4,370	6,303
Equipment \| Operating Segments \| Payables
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Equipment \| Operating Segments \| Treasury Solutions
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Equipment \| Eliminations
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 0