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Capital Requirements (Schedule of Capital Requirements) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
The Company [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 Capital $ 83,507 $ 79,440
Common Equity Tier One Capital to Risk Weighted Assets 14.45% 15.68%
Common Equity Tier One Capital Required for Capital Adequacy $ 26,003 $ 22,798
Common Equity Tier One Capital For Capital Adequacy To Risk Weighted Assets 4.50% 4.50%
Capital [Abstract]    
Total Capital to Risk Weighted Assets, Actual, Amount $ 87,959 $ 83,977
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Amount 46,228 40,531
Tier One Risk Based Capital [Abstract]    
Tier 1 Capital Risk Weighted Assets, Actual, Amount 83,507 79,440
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Amount 34,671 30,398
Tier One Leverage Capital [Abstract]    
Tier 1 Capital to Average Assets, Actual, Amount 83,507 79,440
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Amount $ 29,810 $ 26,848
Risk Based Ratios [Abstract]    
Total Capital to Risk Weighted Assets, Actual, Ratio 15.22% 16.58%
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Ratio 8.00% 8.00%
Tier 1 Capital Risk Weighted Assets, Actual, Ratio 14.45% 15.68%
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Ratio 6.00% 6.00%
Tier 1 Capital to Average Assets, Actual, Ratio 11.21% 11.84%
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Ratio 4.00% 4.00%
The Bank [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 Capital $ 80,150 $ 76,124
Common Equity Tier One Capital to Risk Weighted Assets 14.08% 15.11%
Common Equity Tier One Capital Required for Capital Adequacy $ 25,622 $ 22,666
Common Equity Tier One Capital For Capital Adequacy To Risk Weighted Assets 4.50% 4.50%
Common Equity Tier One Capital Required to be Well-Capitalized $ 37,009 $ 32,740
Common Equity Tier One Capital Required To Be Well Capitalized To Risk Weighted Assets 6.50% 6.50%
Capital [Abstract]    
Total Capital to Risk Weighted Assets, Actual, Amount $ 84,583 $ 80,640
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Amount 45,550 40,295
Total Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount 56,938 50,369
Tier One Risk Based Capital [Abstract]    
Tier 1 Capital Risk Weighted Assets, Actual, Amount 80,150 76,124
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Amount 34,163 30,221
Tier 1 Capital Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount 45,550 40,295
Tier One Leverage Capital [Abstract]    
Tier 1 Capital to Average Assets, Actual, Amount 80,150 76,124
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Amount 29,511 26,711
Tier 1 Capital to Average Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount $ 36,889 $ 33,389
Risk Based Ratios [Abstract]    
Total Capital to Risk Weighted Assets, Actual, Ratio 14.86% 16.01%
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Ratio 8.00% 8.00%
Total Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio 10.00% 10.00%
Tier 1 Capital Risk Weighted Assets, Actual, Ratio 14.08% 15.11%
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Ratio 6.00% 6.00%
Tier 1 Capital Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio 8.00% 8.00%
Tier 1 Capital to Average Assets, Actual, Ratio 10.86% 11.40%
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Ratio 4.00% 4.00%
Tier 1 Capital to Average Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio 5.00% 5.00%