Loans - Past Due and Non Accrual (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due $ 10,338 $ 7,661
60-89 Days Past Due 1,695 3,661
90 Days or Greater Past Due 22,434 20,650
Total Past Due 34,467 31,972
Loans on Non-accrual 41,530 39,573
One-to Four-Family [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 6,203 3,996
60-89 Days Past Due 1,185 2,476
90 Days or Greater Past Due 6,714 8,990
Total Past Due 14,102 15,462
Loans on Non-accrual 17,622 18,870
Multi-Family Residential Real Estate [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 75   
60-89 Days Past Due      
90 Days or Greater Past Due 85 364
Total Past Due 160 364
Loans on Non-accrual    976
Home Equity Lines of Credit [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 2,504 767
60-89 Days Past Due 178 674
90 Days or Greater Past Due 744 754
Total Past Due 3,426 2,195
Loans on Non-accrual 2,689 2,674
Commercial Real Estate [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 314 1,722
60-89 Days Past Due    379
90 Days or Greater Past Due 2,742 3,671
Total Past Due 3,056 5,772
Loans on Non-accrual 8,972 8,844
Construction [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 497 496
60-89 Days Past Due      
90 Days or Greater Past Due 11,297 6,553
Total Past Due 11,794 7,049
Loans on Non-accrual 11,298 7,785
Total Real Estate Loans [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 9,593 6,981
60-89 Days Past Due 1,363 3,529
90 Days or Greater Past Due 21,582 20,332
Total Past Due 32,538 30,842
Loans on Non-accrual 40,581 39,149
Commercial Business Loans [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 284 201
60-89 Days Past Due 50   
90 Days or Greater Past Due 852 318
Total Past Due 1,186 519
Loans on Non-accrual 949 424
Consumer [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
30-59 Days Past Due 461 479
60-89 Days Past Due 282 132
90 Days or Greater Past Due      
Total Past Due 743 611
Loans on Non-accrual