Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019		Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Computer hardware and software	$ 341,282		$ 291,404
Card reading equipment	24,077		20,117
Furniture, fixtures, and vehicles	19,319		18,308
Buildings and improvements	29,127		21,854
Property, plant and equipment, gross	413,805		351,683
Less: accumulated depreciation	(213,980)		(165,482)
Property, plant and equipment, net	$ 199,825	[1]	$ 186,201
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

[1] Reflects the impact of the Company's adoption of ASU 2016-02 "Leases", on January 1, 2019, using a modified retrospective transition method. Under this method, financial results reported in periods prior to 2019 are unchanged. Refer to footnote 14.