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Nature of Business and Summary of Significant Accounting Policies - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Goodwill [Line Items] |  |  |  |  |  |
Gross Balance prior to the end of year |  |  |  |  |  | $ 828,595
Total impairment, beginning of period |  |  |  |  |  | (47,432)
Beginning Balance |  | $ 913,261 |  | $ 781,163 |  |
Goodwill from acquisitions |  | 511 | [1] | 142,287 | [2] |
Foreign currency translation adjustments |  | (4,081) |  | (10,189) |  |
Ending Balance |  | 909,691 |  | 913,261 |  |
Americas Segment [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Balance prior to the end of year |  |  |  |  |  | 523,914
Total impairment, beginning of period |  |  |  |  |  | (47,432)
Beginning Balance |  | 477,141 |  | 476,482 |  |
Goodwill from acquisitions | [2] |  |  | 2,462 |  |
Foreign currency translation adjustments |  | 256 |  | (1,803) |  |
Ending Balance |  | 477,397 |  | 477,141 |  |
EMEA Segment [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Balance prior to the end of year |  |  |  |  |  | 240,303
Beginning Balance |  | 376,827 |  | 240,303 |  |
Goodwill from acquisitions |  | 511 | [1] | 139,825 | [2] |
Foreign currency translation adjustments |  | (3,208) |  | (3,301) |  |
Ending Balance |  | 374,130 |  | 376,827 |  |
Asia/Pacific Segment [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Balance prior to the end of year |  |  |  |  |  | $ 64,378
Beginning Balance |  | 59,293 |  | 64,378 |  |
Foreign currency translation adjustments |  | (1,129) |  | (5,085) |  |
Ending Balance |  | $ 58,164 |  | $ 59,293 |  |
[1] | Goodwill from acquisitions relates to the adjustments to goodwill related to the acquisition of PAY.ON, as discussed in Note 2.
[2] | Goodwill from acquisitions relates to the goodwill recorded for the acquisition of PAY.ON, as well as adjustments to goodwill related to the acquisition of ReD, as discussed in Note 2, Acquisitions.

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