Loans Supplemental Loan Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Loans and Leases Receivable, Other Information [Abstract]
Loans Held-for-sale	$ 171	$ 327	$ 896
Credit Card Receivable | Consumer Portfolio Segment | Minimum
Schedule of Financing Receivable Terms [Line Items]
Principal Repayment Terms, Period	1 year
Credit Card Receivable | Consumer Portfolio Segment | Maximum
Schedule of Financing Receivable Terms [Line Items]
Principal Repayment Terms, Period	5 years
Automobile Loan | Consumer Portfolio Segment | Minimum
Schedule of Financing Receivable Terms [Line Items]
Principal Repayment Terms, Period	3 years
Automobile Loan | Consumer Portfolio Segment | Maximum
Schedule of Financing Receivable Terms [Line Items]
Principal Repayment Terms, Period	7 years