Loans - Outstanding Balance of Acquired Loans (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance $ 8,651 $ 11,157
Discount (2,215) (2,595)
Carrying amount 6,436 8,562
One-to Four-Family [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 6,494 7,581
Multi-Family Residential Real Estate [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 846 1,280
Home Equity Lines of Credit [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 509 568
Commercial Real Estate [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 720 1,646
Total Real Estate Loans [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 8,569 11,075
Commercial Business Loans [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance 78 78
Consumer [Member]
   
Financing Receivable, Allowance for Credit Losses [Line Items]    
Outstanding principal balance $ 4 $ 4