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Selected Segment Financial Data, Revenues and Long lived Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | $ 209,310 | $ 231,462 |
Long lived assets |  |  |
Long lived assets | 1,573,766 |  | $ 1,373,069
Bill Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 66,168 | 65,246 |
Digital Channels/Online [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 22,007 | 22,979 |
Merchant Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 17,381 | 17,671 |
Payments Risk Management [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 22,218 | 15,468 |
Real Time Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 14,091 | 13,743 |
Retail Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 67,445 | 96,355 |
ACI On Premise [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 105,030 | 131,908 |
ACI On Premise [Member] | Digital Channels/Online [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 11,363 | 12,488 |
ACI On Premise [Member] | Merchant Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 5,010 | 6,312 |
ACI On Premise [Member] | Payments Risk Management [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 10,420 | 5,160 |
ACI On Premise [Member] | Real Time Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 13,641 | 13,548 |
ACI On Premise [Member] | Retail Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 64,596 | 94,400 |
ACI On Demand [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 104,280 | 99,554 |
ACI On Demand [Member] | Bill Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 66,168 | 65,246 |
ACI On Demand [Member] | Digital Channels/Online [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 10,644 | 10,491 |
ACI On Demand [Member] | Merchant Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 12,371 | 11,359 |
ACI On Demand [Member] | Payments Risk Management [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 11,798 | 10,308 |
ACI On Demand [Member] | Real Time Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 450 | 195 |
ACI On Demand [Member] | Retail Payments [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 2,849 | 1,955 |
United States [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 119,810 | 135,002 |
Long lived assets |  |  |
Long lived assets | 854,156 |  | 759,513
United States [Member] | ACI On Premise [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 30,864 | 49,193 |
United States [Member] | ACI On Demand [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 88,946 | 85,809 |
Other [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 19,103 | 17,126 |
Long lived assets |  |  |
Long lived assets | 719,610 |  | $ 613,556
Other [Member] | ACI On Premise [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 16,784 | 14,874 |
Other [Member] | ACI On Demand [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 2,319 | 2,252 |
EMEA [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 50,695 | 62,983 |
EMEA [Member] | ACI On Premise [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 38,686 | 51,904 |
EMEA [Member] | ACI On Demand [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 12,009 | 11,079 |
Asia Pacific [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 19,702 | 16,351 |
Asia Pacific [Member] | ACI On Premise [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 18,696 | 15,937 |
Asia Pacific [Member] | ACI On Demand [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | $ 1,006 | $ 414 |

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