Regulatory Capital Matters Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Parenthetical) (Details)	Mar. 31, 2026	Dec. 31, 2025	Jan. 01, 2019
Regulatory Capital Matters [Abstract]
Capital conservation buffer include ratios	0.025	0.025
Capital conservation buffer			2.50%

Minimum capital conservation buffer percentage required to avoid restriction on payout amount of eligible retained income as defined by regulatory framework.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

Name:	us-gaap_BankingRegulationCapitalConservationBufferCapitalConservedMinimum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant