Contract Acquisition Costs, Net - Estimated Future Amortization on Payments for Processing and Conversion (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Conversion costs
Finite-Lived Intangible Assets [Line Items]
2017	$ 32,830
2018	29,727
2019	24,480
2020	20,037
2021	18,197
Payments for processing rights
Finite-Lived Intangible Assets [Line Items]
2017	19,487
2018	18,084
2019	15,220
2020	12,955
2021	$ 10,704

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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