Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Computer hardware and software	$ 197,958	$ 131,409
Card reading equipment	25,553	10,887
Furniture fixtures and Vehicles	15,418	10,291
Buildings and improvements	14,432	10,982
Property, plant and equipment, gross	253,361	163,569
Less: accumulated depreciation	(110,857)	(82,809)
Net property and equipment	$ 142,504	$ 80,760
Minimum | Computer hardware and software
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	3 years
Minimum | Card-reading equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	4 years
Minimum | Furniture, fixtures, and vehicles
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	2 years
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	5 years
Maximum | Computer hardware and software
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	5 years
Maximum | Card-reading equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	6 years
Maximum | Furniture, fixtures, and vehicles
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	10 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	50 years