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Segment Information - Selected Financial Data, Revenues and Long lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	$ 430,423	$ 401,258	$ 856,172	$ 795,823
Long-lived Assets
Long-lived assets	1,882,126		1,882,126		$ 1,942,669
United States
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	275,141	275,855	548,851	512,609
Long-lived Assets
Long-lived assets	1,076,405		1,076,405		1,106,051
Other
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	155,282	125,403	307,321	283,214
Long-lived Assets
Long-lived assets	805,721		805,721		$ 836,618
License
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	68,795	56,711	156,836	141,204
Maintenance
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	51,558	50,421	102,476	99,063
Operating Segments
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	430,423	401,258	856,172	795,823
Operating Segments \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	196,367	179,343	409,828	380,068
Operating Segments \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	234,056	221,915	446,344	415,755
Operating Segments \| Bill payments
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	234,056	221,915	446,344	415,755
Operating Segments \| Bill payments \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	0	0	0	0
Operating Segments \| Bill payments \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	234,056	221,915	446,344	415,755
Operating Segments \| Merchant payments
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	41,125	39,655	88,151	77,314
Operating Segments \| Merchant payments \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	41,125	39,655	88,151	77,314
Operating Segments \| Merchant payments \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	0	0	0	0
Operating Segments \| Payments intelligence
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	16,052	15,161	25,489	24,735
Operating Segments \| Payments intelligence \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	16,052	15,161	25,489	24,735
Operating Segments \| Payments intelligence \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	0	0	0	0
Operating Segments \| Real-time payments
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	22,860	39,471	55,287	65,209
Operating Segments \| Real-time payments \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	22,860	39,471	55,287	65,209
Operating Segments \| Real-time payments \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	0	0	0	0
Operating Segments \| Issuing and acquiring
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	116,330	85,056	240,901	212,810
Operating Segments \| Issuing and acquiring \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	116,330	85,056	240,901	212,810
Operating Segments \| Issuing and acquiring \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	0	0	0	0
Operating Segments \| Software as a service and platform as a service \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	50,706	49,343	100,375	92,586
Operating Segments \| Software as a service and platform as a service \| Biller
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	234,056	221,915	446,344	415,755
Operating Segments \| License \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	68,795	56,711	156,836	141,204
Operating Segments \| Maintenance \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	51,558	50,421	102,476	99,063
Operating Segments \| Services \| Payment Software
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Revenues	$ 25,308	$ 22,868	$ 50,141	$ 47,215