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Loans - Narrative (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Residential Consumer Properties    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential loans in process of foreclosure $ 4,700,000 $ 5,300,000
Consumer Loan    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other real estate properties owned $ 0 $ 0