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Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2025
May 01, 2025
Document Type 10-Q  
Document Quarterly Report true  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Document Period End Date Mar. 31, 2025  
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 (Voting) Common Stock, $.01 par value  
Trading Symbol CFBK  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001070680  
Amendment Flag false  
Voting Common Stock [Member]    
Entity Common Stock, Shares Outstanding   5,219,630
Non-Voting Common Stock [Member]    
Entity Common Stock, Shares Outstanding   1,260,700