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Segment Information - Selected Financial Data (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,370,598 | $ 1,294,322 | $ 1,258,294
Depreciation and amortization | (133,393) | (140,316) | (122,569)
Stock-based compensation expense | 27,242 | 29,602 | 36,763
Corporate and unallocated expenses | (185,731) | (205,310) | (198,871)
Interest, net | (33,538) | (45,002) | (52,066)
Other, net | (1,294) | (1,116) | 520
Income before income taxes | 175,065 | 98,626 | 72,210
Bill Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 592,485 | 586,482 | 510,881
Digital Business Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 60,398 | 75,475 | 77,319
Merchant Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 152,988 | 149,342 | 156,452
Fraud Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 43,704 | 32,942 | 42,010
Real-Time Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 77,922 | 80,654 | 100,599
Issuing and Acquiring |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 443,101 | 369,427 | 371,033
Operating Segments | Banks |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 625,125 | 558,498 | 590,961
Segment Adjusted EBITDA | 372,949 | 331,445 | 343,844
Operating Segments | Banks | Bill Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Banks | Digital Business Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 60,398 | 75,475 | 77,319
Operating Segments | Banks | Merchant Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Banks | Fraud Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 43,704 | 32,942 | 42,010
Operating Segments | Banks | Real-Time Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 77,922 | 80,654 | 100,599
Operating Segments | Banks | Issuing and Acquiring |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 443,101 | 369,427 | 371,033
Operating Segments | Merchants |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 152,988 | 149,342 | 156,452
Segment Adjusted EBITDA | 54,266 | 53,383 | 60,820
Operating Segments | Merchants | Bill Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Digital Business Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Merchant Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 152,988 | 149,342 | 156,452
Operating Segments | Merchants | Fraud Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Real-Time Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Merchants | Issuing and Acquiring |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 592,485 | 586,482 | 510,881
Segment Adjusted EBITDA | 129,048 | 135,144 | 77,295
Operating Segments | Billers | Bill Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 592,485 | 586,482 | 510,881
Operating Segments | Billers | Digital Business Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Merchant Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Fraud Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Real-Time Payments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Billers | Issuing and Acquiring |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 0 | $ 0 | $ 0

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