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Loans (Troubled Debt Restructurings Subsequent Default) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
loan
Dec. 31, 2015
USD ($)
loan
Financing Receivable, Modifications [Line Items]    
Number of Loans Modified as a Troubled Debt Restructuring 13 9
Payment Default [Member]    
Financing Receivable, Modifications [Line Items]    
Number of Loans Modified as a Troubled Debt Restructuring 7 2
Recorded Investment on Modifications with Subsequent Default | $ $ 1,600 $ 290