Intangible Assets - Acquired Intangibles (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amount acquired	$ 12,551
Merchant and Bank Branding Contracts / Relationships
Finite-Lived Intangible Assets [Line Items]
Amount acquired	$ 12,551
Weighted average amortization period	5 years 7 months 6 days