Noninterest Revenue - Card Income (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of Non interest Revenue [Line Items]
Credit cost amortization period		12 months
Minimum
Schedule of Non interest Revenue [Line Items]
Credit card revenue sharing agreement terms	3 years
Maximum
Schedule of Non interest Revenue [Line Items]
Credit card revenue sharing agreement terms	10 years