Intangible Assets - Definite-lived (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 574,587	$ 383,791
Accumulated Amortization	(296,758)	(263,180)
Net Carrying Amount	277,829	120,611
Customer and Bank Branding Contracts / Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	535,623	353,334
Accumulated Amortization	(281,552)	(248,428)
Net Carrying Amount	254,071	104,906
Trade Name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,425	11,618
Accumulated Amortization	(4,437)	(3,674)
Net Carrying Amount	16,988	7,944
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,875	10,718
Accumulated Amortization	(5,585)	(4,781)
Net Carrying Amount	5,290	5,937
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,406	4,351
Accumulated Amortization	(4,197)	(4,057)
Net Carrying Amount	209	294
Deferred Financing Costs [Member] | Revolving Credit Facility [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,258	3,770
Accumulated Amortization	(987)	(2,240)
Net Carrying Amount	$ 1,271	$ 1,530