Revenue Recognition - Disaggregation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 1,093,999	$ 1,349,405	$ 1,345,243
Surcharge revenues
Disaggregation of Revenue [Line Items]
Revenues	425,801	601,809	575,596
Interchange revenues
Disaggregation of Revenue [Line Items]
Revenues	271,313	351,088	412,674
Bank-branding and surcharge-free network revenues
Disaggregation of Revenue [Line Items]
Revenues	230,307	204,491	179,760
Managed services and processing revenues
Disaggregation of Revenue [Line Items]
Revenues	113,358	123,718	124,900
ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenues	1,040,779	1,281,106	1,292,930
ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenues	53,220	68,299	52,313
North America
Disaggregation of Revenue [Line Items]
Revenues	756,243	853,648	820,252
Europe & Africa
Disaggregation of Revenue [Line Items]
Revenues	265,910	395,694	407,584
Australia & New Zealand
Disaggregation of Revenue [Line Items]
Revenues	71,846	100,063	117,407
Operating Segments | North America
Disaggregation of Revenue [Line Items]
Revenues	762,153	863,514	830,179
Operating Segments | North America | Surcharge revenues
Disaggregation of Revenue [Line Items]
Revenues	272,448	357,323	364,580
Operating Segments | North America | Interchange revenues
Disaggregation of Revenue [Line Items]
Revenues	120,587	138,557	143,803
Operating Segments | North America | Bank-branding and surcharge-free network revenues
Disaggregation of Revenue [Line Items]
Revenues	228,845	203,533	179,760
Operating Segments | North America | Managed services and processing revenues
Disaggregation of Revenue [Line Items]
Revenues	95,571	104,542	99,371
Operating Segments | North America | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenues	717,451	803,955	787,514
Operating Segments | North America | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenues	44,702	59,559	42,665
Operating Segments | Europe & Africa
Disaggregation of Revenue [Line Items]
Revenues	265,946	396,320	409,770
Operating Segments | Europe & Africa | Surcharge revenues
Disaggregation of Revenue [Line Items]
Revenues	99,107	164,606	120,906
Operating Segments | Europe & Africa | Interchange revenues
Disaggregation of Revenue [Line Items]
Revenues	150,726	212,531	268,871
Operating Segments | Europe & Africa | Bank-branding and surcharge-free network revenues
Disaggregation of Revenue [Line Items]
Revenues	1,462	958	0
Operating Segments | Europe & Africa | Managed services and processing revenues
Disaggregation of Revenue [Line Items]
Revenues	7,027	9,996	10,614
Operating Segments | Europe & Africa | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenues	258,322	388,091	400,391
Operating Segments | Europe & Africa | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenues	7,624	8,229	9,379
Operating Segments | Australia & New Zealand
Disaggregation of Revenue [Line Items]
Revenues	71,846	100,063	117,407
Operating Segments | Australia & New Zealand | Surcharge revenues
Disaggregation of Revenue [Line Items]
Revenues	54,246	79,880	90,110
Operating Segments | Australia & New Zealand | Interchange revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments | Australia & New Zealand | Bank-branding and surcharge-free network revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments | Australia & New Zealand | Managed services and processing revenues
Disaggregation of Revenue [Line Items]
Revenues	16,706	19,672	27,028
Operating Segments | Australia & New Zealand | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenues	70,952	99,552	117,138
Operating Segments | Australia & New Zealand | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenues	894	511	269
Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(5,946)	(10,492)	(12,113)
Eliminations | Surcharge revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Eliminations | Interchange revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Eliminations | Bank-branding and surcharge-free network revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Eliminations | Managed services and processing revenues
Disaggregation of Revenue [Line Items]
Revenues	(5,946)	(10,492)	(12,113)
Eliminations | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenues	(5,946)	(10,492)	(12,113)
Eliminations | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Eliminations | North America
Disaggregation of Revenue [Line Items]
Revenues	(5,910)	(9,866)	(9,928)
Eliminations | Europe & Africa
Disaggregation of Revenue [Line Items]
Revenues	(36)	(626)	(2,185)
Eliminations | Australia & New Zealand
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 0