Borrowings - Additional Information (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Debt Disclosure [Line Items]    
Amount of advances callable by the FHLB prior to maturity $ 6,500,000  
Available line of credit with the FHLB 9,400,000  
Amounts drawn on the line of credit 0 0
Multi-Family Residential Real Estate [Member]
   
Debt Disclosure [Line Items]    
Carrying value of commercial real estate loans pledged 73,000,000  
Commercial Real Estate [Member]
   
Debt Disclosure [Line Items]    
Carrying value of commercial real estate loans pledged $ 241,700,000