Regulatory Capital Matters - Actual and Required Capital Amounts and Ratios of CFBank (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Regulatory Authorities [Line Items]
Total Capital to risk weighted assets, Actual Amount	$ 24,816		$ 15,351
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	23,217		13,436
Tier 1 (Core) Capital to adjusted total assets, Actual Amount	23,217		13,436
Tangible Capital to adjusted total assets, Actual Amount	23,217		13,436
Total Capital to risk weighted assets, Actual Ratio	20.00%		10.30%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	18.71%		9.02%
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	10.52%		5.39%
Tangible Capital to adjusted total assets, Actual Ratio	10.52%		5.39%
Total Capital to risk weighted assets, For Capital Adequacy Purposes Amount	9,926		11,918
Tier 1 (Core) Capital to risk weighted assets, For Capital Adequacy Purposes Amount	4,963		5,959
Tier 1 (Core) Capital to adjusted total assets, For Capital Adequacy Purposes Amount	8,844		9,968
Tangible Capital to adjusted total assets, For Capital Adequacy Purposes Amount	3,316		3,738
Total Capital to risk weighted assets, For Capital Adequacy Purposes Ratio	8.00%		8.00%
Tier 1 (Core) Capital to risk weighted assets, For Capital Adequacy Purposes Ratio	4.00%		4.00%
Tier 1 (Core) Capital to adjusted total assets, For Capital Adequacy Purposes Ratio	4.00%		4.00%
Tangible Capital to adjusted total assets, For Capital Adequacy Purposes Ratio	1.50%		1.50%
Total Capital to risk weighted assets, Required By Terms Of CFBank Order Amount	14,890		17,876
Tier 1 (Core) Capital to risk weighted assets, Required By Terms Of CFBank Order Amount
Tier 1 (Core) Capital to adjusted total assets, Required By Terms Of CFBank Order Amount	17,687		19,937
Tangible Capital to adjusted total assets, Required By Terms Of CFBank Order Amount
Total Capital to risk weighted assets, Required By Terms Of CFBank Order Ratio	20.00%		10.30%
Tier 1 (Core) Capital to risk weighted assets, Required By Terms Of CFBank Order Ratio		12.00%		12.00%
Tier 1 (Core) Capital to adjusted total assets, Required By Terms Of CFBank Order Ratio	10.52%		5.39%
Tangible Capital to adjusted total assets, Required By Terms Of CFBank Order Ratio