Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital to risk weighted assets, Actual Amount	$ 220,286	$ 215,164
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	200,847	196,977
Common equity tier 1 capital to risk-weighted assets, Actual Amount	200,847	196,977
Tier 1 (Core) Capital to adjusted total assets (Leverage ratio), Actual Amount	$ 200,847	$ 196,977
Total Capital to risk weighted assets, Actual Ratio	0.1350	0.1330
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	0.1231	0.1217
Common equity tier 1 capital to risk-weighted assets, Actual Ratio	0.1231	0.1217
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	0.1005	0.0976
Total Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	$ 163,177	$ 161,818
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	130,541	129,455
Common equity tier 1 capital to risk-weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	106,065	105,182
Tier 1 (Core) Capital to adjusted total assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	$ 99,920	$ 100,908
Total Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Ratio	0.1000	0.1000
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Ratio	0.0800	0.0800
Common equity tier 1 capital to risk-weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Ratio	0.0650	0.0650
Tier 1 (Core) Capital to adjusted total assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Ratio	0.0500	0.0500
Basel III Fully Phased-In [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital to risk weighted assets, Minimum Capital Required-Basel III Amount	$ 171,336	$ 169,909
Tier 1 (Core) Capital to risk weighted assets, Minimum Capital Required-Basel III Amount	138,700	137,546
Common equity tier 1 capital to risk-weighted assets, Minimum Capital Required-Basel III Amount	114,224	113,273
Tier 1 (Core) Capital to adjusted total assets, Minimum Capital Required-Basel III Amount	$ 79,936	$ 80,727
Total Capital to risk weighted assets, Minimum Capital Required-Basel III Ratio	0.1050	0.1050
Tier 1 (Core) Capital to risk weighted assets, Minimum Capital Required-Basel III Ratio	0.0850	0.0850
Common equity tier 1 capital to risk-weighted assets, Minimum Capital Required-Basel III Ratio	0.0700	0.0700
Tier 1 (Core) Capital to adjusted total assets, Minimum Capital Required-Basel III Ratio	0.0400	0.0400