Segment Information - Selected Financial Data, Revenues and Long lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 340,425	$ 301,669	$ 663,505	$ 586,855
Long-lived Assets
Long-lived assets	2,118,981		2,118,981		$ 2,170,529
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	209,459	195,830	408,774	387,807
Long-lived Assets
Long-lived assets	1,382,374		1,382,374		1,425,391
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	130,966	105,839	254,731	199,048
Long-lived Assets
Long-lived assets	736,607		736,607		$ 745,138
Bill Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	161,945	150,194	311,825	300,793
Digital Business Banking
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	12,097	15,700	25,585	30,792
Merchant Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	36,534	37,424	77,536	76,094
Fraud Management
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,552	10,457	15,329	16,681
Real-Time Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	24,212	17,711	46,139	30,896
Issuing and Acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	98,085	70,183	187,091	131,599
License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	64,314	34,727	124,599	55,929
Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	50,562	53,155	101,980	105,518
Operating Segments | Banks
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	141,946	114,051	274,144	209,968
Operating Segments | Banks | Bill Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Banks | Digital Business Banking
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	12,097	15,700	25,585	30,792
Operating Segments | Banks | Merchant Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Banks | Fraud Management
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,552	10,457	15,329	16,681
Operating Segments | Banks | Real-Time Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	24,212	17,711	46,139	30,896
Operating Segments | Banks | Issuing and Acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	98,085	70,183	187,091	131,599
Operating Segments | Banks | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	13,985	14,482	27,937	28,761
Operating Segments | Banks | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	62,942	33,913	117,381	51,931
Operating Segments | Banks | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	46,744	49,132	94,087	97,262
Operating Segments | Banks | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	18,275	16,524	34,739	32,014
Operating Segments | Merchants
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	36,534	37,424	77,536	76,094
Operating Segments | Merchants | Bill Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Merchants | Digital Business Banking
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Merchants | Merchant Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	36,534	37,424	77,536	76,094
Operating Segments | Merchants | Fraud Management
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Merchants | Real-Time Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Merchants | Issuing and Acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Merchants | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	31,058	31,732	61,825	62,775
Operating Segments | Merchants | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,372	814	7,218	3,904
Operating Segments | Merchants | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,808	3,943	7,846	8,095
Operating Segments | Merchants | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	296	935	647	1,320
Operating Segments | Billers
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	161,945	150,194	311,825	300,793
Operating Segments | Billers | Bill Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	161,945	150,194	311,825	300,793
Operating Segments | Billers | Digital Business Banking
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Billers | Merchant Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Billers | Fraud Management
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Billers | Real-Time Payments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Billers | Issuing and Acquiring
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Operating Segments | Billers | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	161,935	150,114	311,778	300,538
Operating Segments | Billers | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	94
Operating Segments | Billers | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10	80	47	161
Operating Segments | Billers | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 0