Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Details) $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital to risk weighted assets, Actual Amount	$ 209,827	$ 193,294
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	191,893	176,828
Common equity tier 1 capital to risk-weighted assets, Actual Amount	191,893	176,828
Tier 1 (Core) Capital to adjusted total assets (Leverage ratio), Actual Amount	$ 191,893	$ 176,828
Total Capital to risk weighted assets, Actual Ratio	0.1336	0.1274
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	0.1222	0.1165
Common equity tier 1 capital to risk-weighted assets, Actual Ratio	0.1222	0.1165
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio	0.0983	0.0989
Total Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	$ 157,072	$ 151,775
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	125,658	121,420
Common equity tier 1 capital to risk-weighted assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	102,097	98,654
Tier 1 (Core) Capital to adjusted total assets, To Be Well Capitalized Under Applicable Regulatory Capital Standards Amount	$ 97,614	$ 89,377
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	$ 164,926	$ 159,364
Tier 1 (Core) Capital to risk weighted assets, Minimum Capital Required-Basel III Amount	133,511	129,009
Common equity tier 1 capital to risk-weighted assets, Minimum Capital Required-Basel III Amount	109,951	106,243
Tier 1 (Core) Capital to adjusted total assets, Minimum Capital Required-Basel III Amount	$ 78,091	$ 71,502
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