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Fair Value of Financial Instruments (Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques) (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Investment Securities - available for sale [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure, Recurring $ 14,718 $ 20,254
Fair Value Measurements, Significant Assumptions Discount Rate  
Valuation Technique Discounted Cash Flow  
Fair Value Input, Unobservable Input Value, Description LIBOR+ 5.25%  
Investment Securities - available for sale [Member] | London Interbank Offered Rate (LIBOR) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 5.25%  
Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure, Nonrecurring $ 3,076 $ 14,537
Fair Value Measurements, Significant Assumptions Marketability Discount  
Valuation Technique Market Comparable Properties  
Fair Value Inputs, Comparability Adjustments, Weighted Average 13.40% 6.50%
Other Real Estate Owned [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair Value Disclosure, Nonrecurring $ 1,704 $ 1,201
Fair Value Measurements, Significant Assumptions Marketability Discount  
Valuation Technique Market Comparable Properties  
Fair Value Inputs, Comparability Adjustments   15.00%
Fair Value Inputs, Comparability Adjustments, Weighted Average 12.60%  
Minimum [Member] | Investment Securities - available for sale [Member] | London Interbank Offered Rate (LIBOR) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate   4.50%
Minimum [Member] | Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments [1] 10.00% 4.60%
Minimum [Member] | Other Real Estate Owned [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments [1] 10.00%  
Maximum [Member] | Investment Securities - available for sale [Member] | London Interbank Offered Rate (LIBOR) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate   5.50%
Maximum [Member] | Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments [1] 17.60% 31.00%
Maximum [Member] | Other Real Estate Owned [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Comparability Adjustments [1] 15.00%  
[1] Range would include discounts taken since appraisal and estimated values