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Regulatory Capital Matters (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Ratios [Abstract]    
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths) 10.00% 10.00%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths) 6.00% 6.00%
Ratios [Abstract]    
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) 8.00%  
Total risk-based capital to total risk-weighted assets (in hundredths) 10.00%  
Consolidated [Member]
   
Total Capital to Risk-Weighted Assets [Abstract]    
Actual Amount 119,319 118,913
For Capital Adequacy Purposes, Amount 56,364 57,658
Amount [Abstract]    
Actual Amount 110,432 109,822
For Capital Adequacy Purposes, Amount 28,182 28,829
Ratios [Abstract]    
Actual Ratio (in hundredths) 16.94% 16.50%
For Capital Adequacy Purposes, Ratio (in hundredths) 8.00% 8.00%
Actual Ratio (in hundredths) 15.67% 15.24%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
Amount [Abstract]    
Actual Amount 110,432 109,822
For Capital Adequacy Purposes, Amount 45,515 46,185
Ratios [Abstract]    
Actual Ratio (in hundredths) 9.71% 9.51%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
Colony Bank [Member]
   
Total Capital to Risk-Weighted Assets [Abstract]    
Actual Amount 118,764 117,243
For Capital Adequacy Purposes, Amount 56,270 57,584
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount 70,338 71,980
Amount [Abstract]    
Actual Amount 109,891 108,163
For Capital Adequacy Purposes, Amount 28,135 28,792
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount 42,203 43,188
Ratios [Abstract]    
Actual Ratio (in hundredths) 16.88% 16.29%
For Capital Adequacy Purposes, Ratio (in hundredths) 8.00% 8.00%
Actual Ratio (in hundredths) 15.62% 15.03%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%
Amount [Abstract]    
Actual Amount 109,891 108,163
For Capital Adequacy Purposes, Amount 45,441 46,117
To be Well Capitalized Under Prompt Corrective Actions Provisions, Amount 56,802 57,646
Ratios [Abstract]    
Actual Ratio (in hundredths) 9.67% 9.38%
For Capital Adequacy Purposes, Ratio (in hundredths) 4.00% 4.00%