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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - Heartland Payment Systems, Inc $ in Thousands |  | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 22, 2016 USD ($) | May 31, 2017 USD ($) option | Sep. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Total purchase consideration | $ | $ 3,922,820 | $ 37,500 | $ 3,922,820 | $ 3,922,820
Initial term of contract |  | 20 years |  |
Number of renewal options | option |  | 4 |  |
Renewal term |  | 5 years |  |

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