Derivative Financial Instruments - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Accumulated Other Comprehensive Loss on Derivative Instruments	$ (10,563)	$ (13,543)	$ (53,067)	$ (25,964)
Amount of (Loss) Gain Reclassified from Accumulated Other Comprehensive Loss into Income	(7,323)	63	(9,985)	345
Interest Rate Swap Contracts | Cost of ATM operating revenues
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Accumulated Other Comprehensive Loss on Derivative Instruments	(10,563)	(13,474)	(52,857)	(25,583)
Amount of (Loss) Gain Reclassified from Accumulated Other Comprehensive Loss into Income	(7,323)	120	(9,942)	458
Interest Rate Swap Contracts | Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Accumulated Other Comprehensive Loss on Derivative Instruments	0	(69)	(210)	(381)
Amount of (Loss) Gain Reclassified from Accumulated Other Comprehensive Loss into Income	$ 0	$ (57)	$ (43)	$ (113)