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Segment Information - Schedule of Revenue by Primary Solution Category for Reportable Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | $ 1,452,579 | $ 1,421,901 | $ 1,370,598
Bill Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 685,912 | 629,411 | 592,485
Digital Business Banking |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 2,792 | 35,504 | 60,398
Merchant Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 150,616 | 153,905 | 152,988
Fraud Management |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 63,503 | 47,421 | 43,704
Real-Time Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 128,957 | 104,777 | 77,922
Issuing and Acquiring |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 420,799 | 450,883 | 443,101
License |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 321,224 | 348,134 | 319,867
Maintenance |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 205,068 | 200,045 | 210,499
Operating Segments | Banks |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 616,051 | 638,585 | 625,125
Operating Segments | Banks | Bill Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Banks | Digital Business Banking |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 2,792 | 35,504 | 60,398
Operating Segments | Banks | Merchant Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Banks | Fraud Management |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 63,503 | 47,421 | 43,704
Operating Segments | Banks | Real-Time Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 128,957 | 104,777 | 77,922
Operating Segments | Banks | Issuing and Acquiring |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 420,799 | 450,883 | 443,101
Operating Segments | Banks | Software as a service and platform as a service |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 39,803 | 48,932 | 57,339
Operating Segments | Banks | License |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 311,549 | 336,028 | 310,758
Operating Segments | Banks | Maintenance |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 189,650 | 184,017 | 193,332
Operating Segments | Banks | Services |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 75,049 | 69,608 | 63,696
Operating Segments | Merchants |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 150,616 | 153,905 | 152,988
Operating Segments | Merchants | Bill Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Digital Business Banking |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Merchant Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 150,616 | 153,905 | 152,988
Operating Segments | Merchants | Fraud Management |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Real-Time Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Issuing and Acquiring |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 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 | 123,528 | 124,631 | 124,933
Operating Segments | Merchants | License |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 9,675 | 12,106 | 9,015
Operating Segments | Merchants | Maintenance |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 15,322 | 15,934 | 16,846
Operating Segments | Merchants | Services |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 2,091 | 1,234 | 2,194
Operating Segments | Billers |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 685,912 | 629,411 | 592,485
Operating Segments | Billers | Bill Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 685,912 | 629,411 | 592,485
Operating Segments | Billers | Digital Business Banking |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Merchant Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Fraud Management |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Real-Time Payments |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Issuing and Acquiring |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 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 | 685,816 | 629,317 | 592,070
Operating Segments | Billers | License |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 0 | 0 | 94
Operating Segments | Billers | Maintenance |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 96 | 94 | 321
Operating Segments | Billers | Services |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | $ 0 | $ 0 | $ 0

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