Segment Information - Selected Financial Data, Revenues and Long lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,370,598	$ 1,294,322	$ 1,258,294
Long lived assets
Long-lived Assets	2,170,529	2,174,513
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	869,081	830,511	781,820
Long lived assets
Long-lived Assets	1,425,391	1,423,862
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	501,517	463,811	476,474
Long lived assets
Long-lived Assets	745,138	750,651
Operating Segments | Banks
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	625,125	558,498	590,961
Operating Segments | Banks | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	57,339	69,254	65,703
Operating Segments | Banks | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	310,758	232,143	256,097
Operating Segments | Banks | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	193,332	194,400	194,128
Operating Segments | Banks | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	63,696	62,701	75,033
Operating Segments | Merchants
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	152,988	149,342	156,452
Operating Segments | Merchants | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	124,933	113,854	101,666
Operating Segments | Merchants | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,015	14,659	31,936
Operating Segments | Merchants | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	16,846	16,981	18,968
Operating Segments | Merchants | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,194	3,848	3,882
Operating Segments | Billers
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	592,485	586,482	510,881
Operating Segments | Billers | Software as a service and platform as a service
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	592,070	586,072	510,300
Operating Segments | Billers | License
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	94	94	228
Operating Segments | Billers | Maintenance
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	321	316	313
Operating Segments | Billers | Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 0	$ 0	$ 40