Regulatory Capital Matters (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total Capital to Risk-Weighted Assets [Abstract]
Actual Amount	$ 136,946us-gaap_Capital	$ 136,022us-gaap_Capital
For capital adequacy purposes, amount	63,179	60,639
Amount [Abstract]
Actual Amount	128,569us-gaap_TierOneLeverageCapital	127,220us-gaap_TierOneLeverageCapital
For capital adequacy purposes, amount	47,385	30,320
Ratios [Abstract]
Actual ratio (in hundredths)	17.34%us-gaap_CapitalToRiskWeightedAssets	17.95%us-gaap_CapitalToRiskWeightedAssets
For capital adequacy purposes, ratio (in hundredths)	8.00%	8.00%
Actual ratio (in hundredths)	16.28%	16.78%
For capital adequacy purposes, ratio (in hundredths)	6.00%	4.00%
Amount [Abstract]
Actual amount	77,069
For capital adequacy purposes, amount	35,538
Ratios [Abstract]
Actual ratio (in hundredths)	9.76%
For capital adequacy purposes, ratio (in hundredths)	4.50%
Amount [Abstract]
Actual amount	128,569us-gaap_TierOneRiskBasedCapital	127,220us-gaap_TierOneRiskBasedCapital
For capital adequacy purposes, amount	46,180	45,509
Ratios [Abstract]
Actual ratio (in hundredths)	11.14%	11.18%
For capital adequacy purposes, ratio (in hundredths)	4.00%	4.00%
Tier 1 capital to risk-weighted assets (in hundredths)	0.625%
Increase in Tier 1 capital to risk-weighted assets (in hundredths)	0.625%
Tier 1 capital conservation buffer of risk-weighted assets (in hundredths)	2.50%
Colony Bank [Member]
Total Capital to Risk-Weighted Assets [Abstract]
Actual Amount	129,606	127,833
For capital adequacy purposes, amount	63,083	60,542
To be well capitalized under prompt corrective action provisions, amount	78,854	75,678
Amount [Abstract]
Actual Amount	121,229	119,031
For capital adequacy purposes, amount	47,312	30,271
To be well capitalized under prompt corrective action provisions, amount	63,083	45,407
Ratios [Abstract]
Actual ratio (in hundredths)	16.44%	16.89%
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)	15.37%	15.73%
For capital adequacy purposes, ratio (in hundredths)	6.00%	4.00%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths)	8.00%	6.00%
Amount [Abstract]
Actual amount	121,229
For capital adequacy purposes, amount	35,484
To be well capitalized under prompt corrective action provisions, amount	51,255
Ratios [Abstract]
Actual ratio (in hundredths)	15.37%
For capital adequacy purposes, ratio (in hundredths)	4.50%
To be Well Capitalized Under Prompt Corrective Actions Provisions, Ratio (in hundredths)	6.50%
Amount [Abstract]
Actual amount	121,229	119,031
For capital adequacy purposes, amount	46,033	45,364
To be well capitalized under prompt corrective action provisions, amount	$ 57,541	$ 56,705
Ratios [Abstract]
Actual ratio (in hundredths)	10.53%	10.50%
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%

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Common Equity Tier 1 Risk Based Capital as defined in the regulations.

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The minimum Common Equity Tier One Capital Ratio (Common Equity Tier 1 Capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The increase in minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action as per Basel III framework.

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Tier 1 Capital conversion buffer of risk weighted assets as per Basel III framework.

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The new minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action as per Basel III framework.

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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