Capital Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 2 capital, maximum percent	1.25%
Consolidated [Member]
Total Capital (to Risk Weighted Assets)
Total Capital (to Risk Weighted Assets) - Actual (Amount)	$ 221,245	$ 203,150
Total Capital (to Risk Weighted Assets) - Actual (Ratio)	13.21%	14.58%
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 133,986	$ 110,982
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Ratio)	8.00%	8.00%
Tier 1 Capital (to Risk Weighted Assets)
Tier 1 Capital (to Risk Weighted Assets) - Actual Amount	$ 187,845	$ 185,690
Tier 1 Capital (to Risk Weighted Assets) - Actual Ratio	11.22%	13.33%
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 66,968	$ 55,491
CET 1 (to Risk Weighted Assets)
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Actual Amount	$ 187,845
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Actual Ratio	11.22%
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 66,968
Tier 1 Capital (to Average Assets)
Tier 1 Capital (to Average Assets) - Actual Amount	$ 187,845	$ 185,690
Tier 1 Capital (to Average Assets) - Actual Ratio	8.19%	9.78%
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 91,744	$ 75,937
CommunityOne Bank, N.A. [Member]
Total Capital (to Risk Weighted Assets)
Total Capital (to Risk Weighted Assets) - Actual (Amount)	$ 225,510	$ 206,474
Total Capital (to Risk Weighted Assets) - Actual (Ratio)	13.48%	14.88%
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 133,839	$ 111,013
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Ratio)	8.00%	8.00%
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Amount)	$ 167,299	$ 138,767
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Ratio)	10.00%	10.00%
Tier 1 Capital (to Risk Weighted Assets)
Tier 1 Capital (to Risk Weighted Assets) - Actual Amount	$ 209,541	$ 189,081
Tier 1 Capital (to Risk Weighted Assets) - Actual Ratio	12.53%	13.63%
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 66,893	$ 55,507
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Ratio)	4.00%	4.00%
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Amount)	$ 99,944	$ 83,260
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Ratio)	6.00%	6.00%
CET 1 (to Risk Weighted Assets)
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Actual Amount	$ 209,541
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Actual Ratio	12.53%
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 75,255
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Ratio)	4.50%
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt Corrective Action Purposes (Amount)	$ 116,601
Tier 1 Common Equity Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt Corrective Action Purposes (Ratio)	7.00%
Tier 1 Capital (to Average Assets)
Tier 1 Capital (to Average Assets) - Actual Amount	$ 209,541	$ 189,081
Tier 1 Capital (to Average Assets) - Actual Ratio	9.30%	9.94%
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	$ 90,125	$ 76,068
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Ratio)	4.00%	4.00%
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Amount)	$ 112,656	$ 95,085
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Ratio)	5.00%	5.00%