Revenue Recognition - Disaggregation (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) item	Mar. 31, 2017 USD ($)
Disaggregation of Revenue [Line Items]
Total revenues	$ 336,184	$ 357,572
Number of financial statement captions for revenue | item	2
ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 319,731
Total revenues	319,731	341,788
Surcharge Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	139,354
Interchange Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	104,403
Bank Branding And Surcharge Free Network Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	44,447
Managed Services Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	16,732
Other Service Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14,795
ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	16,453
Total revenues	16,453	$ 15,784
ATM product sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	12,808
Other Miscellaneous Activities [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	3,645
North America
Disaggregation of Revenue [Line Items]
Total revenues	209,760
North America | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	195,628
North America | Surcharge Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	89,115
North America | Interchange Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	35,819
North America | Bank Branding And Surcharge Free Network Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	44,447
North America | Managed Services Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	12,553
North America | Other Service Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,694
North America | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	14,132
North America | ATM product sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	12,786
North America | Other Miscellaneous Activities [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,346
Europe And Africa
Disaggregation of Revenue [Line Items]
Total revenues	98,445
Europe And Africa | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	96,182
Europe And Africa | Surcharge Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	26,169
Europe And Africa | Interchange Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	67,458
Europe And Africa | Other Service Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,555
Europe And Africa | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,263
Europe And Africa | ATM product sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	6
Europe And Africa | Other Miscellaneous Activities [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,257
Australia And New Zealand
Disaggregation of Revenue [Line Items]
Total revenues	30,696
Australia And New Zealand | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	30,638
Australia And New Zealand | Surcharge Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,070
Australia And New Zealand | Interchange Related Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,126
Australia And New Zealand | Managed Services Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,179
Australia And New Zealand | Other Service Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,263
Australia And New Zealand | ATM product sales and other revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	58
Australia And New Zealand | ATM product sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	16
Australia And New Zealand | Other Miscellaneous Activities [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	42
Segment Eliminations
Disaggregation of Revenue [Line Items]
Total revenues	(2,717)
Segment Eliminations | ATM operating revenues
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(2,717)
Segment Eliminations | Other Service Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ (2,717)