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Fair Value Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Carrying (Reported) Amount, Fair Value Disclosure [Member]    
Fair Value, Financial Assets: [Abstract]    
Fair Value, Financial Instruments, Loans, Net $ 448,894 $ 426,303
Fair Value, Financial Instruments, Loans Held For Sale 1,922 1,497
Fair Value, Financial Liabilities: [Abstract]    
Fair Value, Financial Instruments, Time Deposits 188,071 208,137
Fair Value, Financial Instruments, Long-term Debt 3,217 3,217
Estimate of Fair Value, Fair Value Disclosure [Member]    
Fair Value, Financial Assets: [Abstract]    
Fair Value, Financial Instruments, Loans, Net 447,468 428,446
Fair Value, Financial Instruments, Loans Held For Sale 1,950 1,507
Fair Value, Financial Liabilities: [Abstract]    
Fair Value, Financial Instruments, Time Deposits 185,564 207,791
Fair Value, Financial Instruments, Long-term Debt 3,217 3,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Financial Assets: [Abstract]    
Fair Value, Financial Instruments, Loans, Net 0 0
Fair Value, Financial Instruments, Loans Held For Sale 0 0
Fair Value, Financial Liabilities: [Abstract]    
Fair Value, Financial Instruments, Time Deposits 0 0
Fair Value, Financial Instruments, Long-term Debt 0 0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Financial Assets: [Abstract]    
Fair Value, Financial Instruments, Loans, Net 0 0
Fair Value, Financial Instruments, Loans Held For Sale 1,950 1,507
Fair Value, Financial Liabilities: [Abstract]    
Fair Value, Financial Instruments, Time Deposits 185,564 207,791
Fair Value, Financial Instruments, Long-term Debt 3,217 3,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Financial Assets: [Abstract]    
Fair Value, Financial Instruments, Loans, Net 447,468 428,446
Fair Value, Financial Instruments, Loans Held For Sale 0 0
Fair Value, Financial Liabilities: [Abstract]    
Fair Value, Financial Instruments, Time Deposits 0 0
Fair Value, Financial Instruments, Long-term Debt $ 0 $ 0