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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended
Aug. 20, 2012
Dec. 31, 2012
D
Segment
Dec. 31, 2011
Dec. 31, 2010
Dec. 05, 2008
Significant Accounting Policies [Line Items]          
Sale of common stock 15,000,000 15,936,417 937,417    
Common stock price per share $ 1.50        
Net proceeds from issuance of common stock $ 20,221 $ 20,221        
Issuance of common stock, offering costs 2,279        
Maturity of cash, deposits with other financial institutions   Fewer than 90 days      
Delinquent time of loan   90 days      
Charge off of consumer loans, period   90 days      
Nonaccrual loans and loans past due   90 days      
Balances of loans of all other classes while impairment evaluation   500      
Loans individually evaluated for impairment, number of days past due   90      
Fixed rates loans limit   three to five years      
Maturity of construction loans convert to permanent loans   30 years      
Home equity lines of credit combined with the balance of the prior mortgage liens   89.90%      
The collateral values associated with certain loans declined   50.00%      
Loan servicing fees   26 22 21  
Estimated life of intangible asset   4 years 6 months      
Tax benefit greater than being realized on examination   50.00%      
Cash on deposit pledged as collateral for FHLB advances   24,077 28,883    
Shares of Central Federal Corporation Fixed Rate Cumulative Perpetual Preferred Stock issued by Company         7,225
Number of reportable operating segment   1      
Minimum [Member] | Land, buildings and improvements [Member]
          
Significant Accounting Policies [Line Items]          
Estimated useful life   3 years      
Minimum [Member] | Furniture, fixtures and equipment [Member]
          
Significant Accounting Policies [Line Items]          
Estimated useful life   2 years      
Maximum [Member] | Land, buildings and improvements [Member]
          
Significant Accounting Policies [Line Items]          
Estimated useful life   40 years      
Maximum [Member] | Furniture, fixtures and equipment [Member]
          
Significant Accounting Policies [Line Items]          
Estimated useful life   25 years      
Single-family residential [Member]
          
Significant Accounting Policies [Line Items]          
Residential real estate loan amount for portfolio   85.00%      
Commercial real estate loans [Member]
          
Significant Accounting Policies [Line Items]          
Residential real estate loan amount for portfolio   75.00%      
Construction loans [Member]
          
Significant Accounting Policies [Line Items]          
Residential real estate loan amount for portfolio   75.00%      
Cash [Member]
          
Significant Accounting Policies [Line Items]          
Cash on deposit pledged as collateral for FHLB advances   $ 3,300 $ 800    
Multi-family residential [Member]
          
Significant Accounting Policies [Line Items]          
Residential real estate loan amount for portfolio   75.00%