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Mortgage Banking (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Mortgage Banking [Abstract]      
Loans originated for resale, net of principal payments $ 53,591 $ 47,498 $ 29,850
Proceeds from loan sales 57,830 46,077 29,561
Net gains on sales of loans held for sale 1,748 1,416 1,023
Loan servicing fees, net of amortization $ 159 $ 113 $ 166