Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Mar. 15, 2023	Jun. 30, 2022
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	0-25045
Entity Registrant Name	CF BANKSHARES INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	34-1877137
Entity Address, Address Line One	4960 E. Dublin Granville Road
Entity Address, Address Line Two	Suite #400,
Entity Address, City or Town	Columbus
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43081
City Area Code	614
Local Phone Number	334-7979
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	CFBK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 137.6
Documents Incorporated By Reference	Portions of the registrant’s Proxy Statement for the Annual Meeting of Stockholders to be held on June 7, 2023, are incorporated herein by reference into Part III of this Form 10-K.
Entity Central Index Key	0001070680
Auditor Name	FORVIS, LLP(Formerly, BKD, LLP)
Auditor Location	Indianapolis, Indiana
Auditor Firm ID	686
Common Stock [Member]
Entity Common Stock, Shares Outstanding		5,289,881
Non-Voting Common Stock [Member]
Entity Common Stock, Shares Outstanding		1,260,700