Segment Information - Selected Financial Data, Revenues and Long lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 425,749	$ 394,565
Long-lived assets
Long-lived assets	1,905,382		$ 1,942,669
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	273,710	236,754
Long-lived assets
Long-lived assets	1,090,183		1,106,051
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	152,039	157,811
Long-lived assets
Long-lived assets	815,199		$ 836,618
License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	88,041	84,493
Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	50,918	48,642
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	425,749	394,565
Operating Segments \| Bill payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	212,288	193,840
Operating Segments \| Merchant payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	47,026	37,659
Operating Segments \| Payments intelligence
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,437	9,574
Operating Segments \| Real-time payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	32,427	25,738
Operating Segments \| Issuing and acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	124,571	127,754
Operating Segments \| Payment Software
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	213,461	200,725
Operating Segments \| Payment Software \| Bill payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0
Operating Segments \| Payment Software \| Merchant payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	47,026	37,659
Operating Segments \| Payment Software \| Payments intelligence
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,437	9,574
Operating Segments \| Payment Software \| Real-time payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	32,427	25,738
Operating Segments \| Payment Software \| Issuing and acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	124,571	127,754
Operating Segments \| Payment Software \| Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	49,669	43,243
Operating Segments \| Payment Software \| License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	88,041	84,493
Operating Segments \| Payment Software \| Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	50,918	48,642
Operating Segments \| Payment Software \| Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	24,833	24,347
Operating Segments \| Biller
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	212,288	193,840
Operating Segments \| Biller \| Bill payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	212,288	193,840
Operating Segments \| Biller \| Merchant payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0
Operating Segments \| Biller \| Payments intelligence
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0
Operating Segments \| Biller \| Real-time payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0
Operating Segments \| Biller \| Issuing and acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0
Operating Segments \| Biller \| Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 212,288	$ 193,840