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Regulatory Capital Matters (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Ratios [Abstract]    
Actual Ratio (in hundredths) 10.00%  
Ratios [Abstract]    
Actual Ratio (in hundredths) 8.00%  
Tier 1 capital to total average assets (in hundredths) 8.00%  
Total risk-based capital to total risk-weighted assets (in hundredths) 10.00%  
Tier 1 capital to risk-weighted assets (in hundredths) 4.50%  
Tier 1 capital conservation buffer of risk-weighted assets (in hundredths) 2.50%  
Increase in Tier 1 capital to risk-weighted assets (in hundredths) 6.00%  
Minimum leverage ratio of Tier 1 capital to risk-weighted assets (in hundredths) 4.00%  
Consolidated [Member]
   
Total Capital to Risk-Weighted Assets [Abstract]    
Actual Amount $ 131,523 $ 129,569
For Capital Adequacy Purposes, Amount 59,480 60,791
Amount [Abstract]    
Actual Amount 122,215 120,048
For Capital Adequacy Purposes, Amount 29,740 30,396
Ratios [Abstract]    
Actual Ratio (in hundredths) 17.69% 17.06%
For Capital Adequacy Purposes, Ratio (in hundredths) 8.00% 8.00%
Actual Ratio (in hundredths) 16.44% 15.81%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
Amount [Abstract]    
Actual Amount 122,215 120,048
For Capital Adequacy Purposes, Amount 45,274 45,419
Ratios [Abstract]    
Actual Ratio (in hundredths) 10.80% 10.57%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
Tier 1 capital to total average assets (in hundredths) 10.80% 10.57%
Total risk-based capital to total risk-weighted assets (in hundredths) 17.69% 17.06%
Colony Bank [Member]
   
Total Capital to Risk-Weighted Assets [Abstract]    
Actual Amount 134,676 131,024
For Capital Adequacy Purposes, Amount 59,350 60,638
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount 74,187 75,797
Amount [Abstract]    
Actual Amount 125,388 121,521
For Capital Adequacy Purposes, Amount 29,675 30,319
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount 44,512 45,478
Ratios [Abstract]    
Actual Ratio (in hundredths) 18.15% 17.29%
For Capital Adequacy Purposes, Ratio (in hundredths) 8.00% 8.00%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths) 10.00% 10.00%
Actual Ratio (in hundredths) 16.90% 16.03%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths) 6.00% 6.00%
Amount [Abstract]    
Actual Amount 125,388 121,521
For Capital Adequacy Purposes, Amount 45,183 45,333
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount $ 56,479 $ 56,666
Ratios [Abstract]    
Actual Ratio (in hundredths) 11.10% 10.72%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths) 5.00% 5.00%
Tier 1 capital to total average assets (in hundredths) 11.10% 10.72%
Total risk-based capital to total risk-weighted assets (in hundredths) 18.15% 17.29%