Regulatory Capital Matters - Actual And Required Capital Amounts And Ratios Of CFBank (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Regulatory Capital Matters [Abstract]
Total Capital to risk weighted assets, Actual Amount	$ 24,552	$ 25,002
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	22,356	22,950
Tier 1 (Core) Capital to adjusted total assets, Actual Amount	22,356	22,950
Tangible Capital to adjusted total assets, Actual Amount	22,356	22,950
Total Capital to risk weighted assets, Actual Ratio	14.26%	15.53%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	12.98%	14.26%
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	10.60%	10.97%
Tangible Capital to adjusted total assets, Actual Ratio	10.60%	10.97%
Total Capital to risk weighted assets, For Capital Adequacy Purposes Amount	13,778	12,878
Tier 1 (Core) Capital to risk weighted assets, For Capital Adequacy Purposes Amount	6,889	6,439
Tier 1 (Core) Capital to adjusted total assets, For Capital Adequacy Purposes Amount	8,440	8,372
Tangible Capital to adjusted total assets, For Capital Adequacy Purposes Amount	3,165	3,139
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%
Capital Required to be Well Capitalized	17,223	16,098
Tier One Risk Based Capital Required to be Well Capitalized	10,334	9,659
Tier One Leverage Capital Required to be Well Capitalized	10,550	10,465
Tangible Capital to adjusted total assets, To Be Well Capitalized Under Prompt Corrective Action Regulations, Amount
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.00%	6.00%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Tangible Capital to adjusted total assets, To Be Well Capitalized Under Prompt Corrective Action Regulations
Total Capital to risk weighted assets, Required By Terms Of CFBank Order Amount	20,668	19,317
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	16,880	16,744
Tangible Capital to adjusted total assets, Required By Terms Of CFBank Order Amount
Capital Required By Terms Of Cf Bank Order, Ratio	12.00%	12.00%
Tier 1 (Core) Capital to risk weighted assets, Required By Terms Of CFBank Order Ratio
Tier One Leverage Capital To Average Assets, Required By Terms Of CFBank Order, Ratio	8.00%	8.00%
Tangible Capital to adjusted total assets, Required By Terms Of CFBank Order Ratio