Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Regulatory Capital Matters [Abstract]
Total Capital to risk weighted assets, Actual Amount	$ 81,485	$ 69,066
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	74,258	62,085
Common equity Tier 1 Capital to risk weighted assets, Actual Amount	74,258	62,085
Tier 1 (Core) Capital to adjusted total assets (Leverage Ratio), Actual Amount	$ 74,258	$ 62,085
Total Capital to risk weighted assets, Actual Ratio	12.09%	12.37%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	11.01%	11.12%
Common equity Tier 1 Capital to risk weighted assets, Actual Ratio	11.01%	11.12%
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	10.03%	10.13%
Total Capital to risk weighted assets, Phase-In Schedule Amount	$ 70,788	$ 55,164
Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Amount	57,305	43,998
Common equity Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Amount	47,192	35,622
Tier 1 (Core) Capital to adjusted total assets, Phase-In Schedule Amount	$ 29,609	$ 24,526
Total Capital to risk weighted assets, Phase-In Schedule Ratio	10.50%	9.88%
Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Ratio	8.50%	7.88%
Common equity Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Ratio	7.00%	6.38%
Tier 1 (Core) Capital to adjusted total assets, Phase-In Schedule Ratio	4.00%	4.00%
Total Capital to risk weighted assets, Fully Phased-In Amount		$ 58,626
Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Amount		47,459
Common equity Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Amount		39,084
Tier 1 (Core) Capital to adjusted total assets, Fully Phased-In Amount		$ 24,526
Total Capital to risk weighted assets, Fully Phased-In Ratio		10.50%
Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Ratio		8.50%
Common equity Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Ratio		7.00%
Tier 1 (Core) Capital to adjusted total assets, Fully Phased-In Ratio		4.00%
Capital Required to be Well Capitalized, Amount	$ 67,417	$ 55,834
Tier One Risk Based Capital Required to be Well Capitalized	53,934	44,668
Common equity Tier One Risk Based Capital Required to be Well Capitalized	43,821	36,292
Tier One Leverage Capital Required to be Well Capitalized	$ 37,011	$ 30,658
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	8.00%	8.00%
Common equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%