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Regulatory Capital Requirements (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Tier 1 capital to risk-weighted assets [Abstract]    
Actual $ 117,603,000 $ 115,865,000
Average assets [Abstract]    
Retained earnings from prior two years available for dividends 6,781,000  
Non Consolidated [Member]
   
Tier 2 capital to risk-weighted asets [Abstract]    
Actual 124,366,000 123,599,000
For capital adequacy purpose 63,531,000 64,320,000
To be well-capitalized under prompt corrective action provisions 79,414,000 80,400,000
Risk-weighted assets [Abstract]    
Actual (in hundredths) 15.66% 15.37%
For capital adequacy purpose (in hundredths) 8.00% 8.00%
To be well-capitalized under prompt corrective action provisions (in hundredths) 10.00% 10.00%
Actual (in hundredths) 14.41% 14.11%
For capital adequacy purpose (in hundredths) 4.00% 4.00%
To be well-capitalized under prompt corrective action provisions (in hundredths) 6.00% 6.00%
Tier 1 capital to risk-weighted assets [Abstract]    
Actual 114,419,000 113,521,000
For capital adequacy purpose 31,765,000 32,160,000
To be well-capitalized under prompt corrective action provisions 47,648,000 48,240,000
Tier 1 capital to average assets [Abstract]    
Actual 114,419,000 113,521,000
For capital adequacy purpose 55,636,000 54,600,000
To be well-capitalized under prompt corrective action provisions 69,545,000 68,250,000
Average assets [Abstract]    
Actual (in hundredths) 8.23% 8.33%
For capital adequacy purpose (in hundredths) 4.00% 4.00%
To be well-capitalized under prompt corrective action provisions (in hundredths) 5.00% 5.00%
Consolidated [Member]
   
Tier 2 capital to risk-weighted asets [Abstract]    
Actual 127,557,000 125,943,000
For capital adequacy purpose 63,579,000 64,320,000
Risk-weighted assets [Abstract]    
Actual (in hundredths) 16.05% 15.66%
For capital adequacy purpose (in hundredths) 8.00% 8.00%
Actual (in hundredths) 14.80% 14.40%
For capital adequacy purpose (in hundredths) 4.00% 4.00%
Tier 1 capital to risk-weighted assets [Abstract]    
For capital adequacy purpose 31,790,000 32,160,000
Tier 1 capital to average assets [Abstract]    
Actual 117,603,000 115,865,000
For capital adequacy purpose $ 55,628,000 $ 55,720,000
Average assets [Abstract]    
Actual (in hundredths) 8.46% 8.32%
For capital adequacy purpose (in hundredths) 4.00% 4.00%