Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Regulatory Capital Matters [Abstract]
Total Capital to risk weighted assets, Actual Amount	$ 45,802	$ 45,118
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	41,181	40,556
Common equity Tier 1 (Core) Capital to risk weighted assets, Actual Amount	41,181	40,556
Tier 1 (Core) Capital to adjusted total assets, Actual Amount	$ 41,181	$ 40,556
Total Capital to risk weighted assets, Actual Ratio	12.47%	12.46%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	11.22%	11.20%
Common equity Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	11.22%	11.20%
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	9.88%	9.66%
Total Capital to risk weighted assets, Phase-In Schedule Amount	$ 33,962	$ 31,256
Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Amount	26,619	24,013
Common equity Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Amount	21,112	18,580
Tier 1 (Core) Capital to adjusted total assets, Phase-In Schedule Amount	$ 16,669	$ 16,792
Total Capital to risk weighted assets, Phase-In Schedule Ratio	9.25%	8.63%
Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Ratio	7.25%	6.63%
Common equity Tier 1 (Core) Capital to risk weighted assets, Phase-In Schedule Ratio	5.75%	5.13%
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	$ 38,552	$ 38,029
Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Amount	31,208	30,785
Common equity Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Amount	25,701	25,353
Tier 1 (Core) Capital to adjusted total assets, Fully Phased-In Amount	$ 16,669	$ 16,792
Total Capital to risk weighted assets, Fully Phased-In Ratio	10.50%	10.50%
Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Ratio	8.50%	8.50%
Common equity Tier 1 (Core) Capital to risk weighted assets, Fully Phased-In Ratio	7.00%	7.00%
Tier 1 (Core) Capital to adjusted total assets, Fully Phased-In Ratio	4.00%	4.00%
Capital Required to be Well Capitalized	$ 36,716	$ 36,218
Tier One Risk Based Capital Required to be Well Capitalized	29,373	28,974
Common equity Tier One Risk Based Capital Required to be Well Capitalized	23,865	23,542
Tier One Leverage Capital Required to be Well Capitalized	$ 20,836	$ 20,991
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%