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Loans (Troubled Debts Restructured) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
loan
Sep. 30, 2016
USD ($)
loan
Sep. 30, 2017
USD ($)
loan
Sep. 30, 2016
USD ($)
loan
Commercial Real Estate [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan   1   1
Pre-Modification Outstanding Recorded Balance   $ 406   $ 406
Post-Modification Outstanding Recorded Balance   $ 406   $ 406
Commercial Segment [Member] | Commercial and Industrial [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan     1 1
Pre-Modification Outstanding Recorded Balance     $ 72 $ 83
Post-Modification Outstanding Recorded Balance     $ 72 $ 83
Consumer [Member] | First Mortgage [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan 1 1 5 10
Pre-Modification Outstanding Recorded Balance $ 26 $ 11 $ 210 $ 565
Post-Modification Outstanding Recorded Balance $ 26 $ 12 $ 214 $ 581
Consumer [Member] | Second Mortgage [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan   1 1 1
Pre-Modification Outstanding Recorded Balance   $ 39 $ 3 $ 39
Post-Modification Outstanding Recorded Balance   $ 39 $ 3 $ 39
Consumer [Member] | Automobile Loan [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan       1
Pre-Modification Outstanding Recorded Balance       $ 4
Post-Modification Outstanding Recorded Balance       $ 4
Consumer [Member] | Boat/RVs [Member]        
Financing Receivable, Modifications [Line Items]        
No. of Loans | loan       3
Pre-Modification Outstanding Recorded Balance       $ 56
Post-Modification Outstanding Recorded Balance       $ 56