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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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