Capital Matters (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Consolidated Entities [Member]
Total Capital (to Risk Weighted Assets)
Total Capital (to Risk Weighted Assets) - Actual (Amount)	$ 203,150	$ 159,146
Total Capital (to Risk Weighted Assets) - Actual (Ratio)	14.58%	12.62%
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	110,982	100,859
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	185,690	119,499
Tier 1 Capital (to Risk Weighted Assets) - Actual Ratio	13.33%	9.48%
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	55,491	50,429
Tier 1 Capital (to Average Assets)
Tier 1 Capital (to Average Assets) - Actual Amount	185,690	119,499
Tier 1 Capital (to Average Assets) - Actual Ratio	9.78%	5.96%
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	75,937	80,220
CommunityOne Bank, N.A. [Member]
Total Capital (to Risk Weighted Assets)
Total Capital (to Risk Weighted Assets) - Actual (Amount)	206,474	166,152
Total Capital (to Risk Weighted Assets) - Actual (Ratio)	14.88%	13.20%
Total Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	111,013	100,713
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)	138,767	125,891
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	189,081	150,274
Tier 1 Capital (to Risk Weighted Assets) - Actual Ratio	13.63%	11.94%
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	55,507	50,356
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)	83,260	75,534
Tier 1 Capital (to Risk Weighted Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Ratio)	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Tier 1 Capital (to Average Assets) - Actual Amount	189,081	150,274
Tier 1 Capital (to Average Assets) - Actual Ratio	9.94%	7.49%
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - For Capital Adequacy Purposes (Amount)	76,068	80,204
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)	$ 95,085	$ 100,256
Tier 1 Capital (to Average Assets) - Minimum Regulatory Requirement to be Well Capitalized - Under Prompt corrective Action Provisions (Ratio)	5.00%	5.00%