Quarterly report pursuant to Section 13 or 15(d)

Loans - Additional Information (Detail)

v2.4.0.8
Loans - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Property
Mar. 31, 2013
Dec. 31, 2013
Property
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accrued interest receivable $ 7,107,000   $ 7,055,000
Loans receivable 2,221,520,000   2,177,498,000
Loans receivable reclassified as loans held for sale    3,373,000  
Sale of loans held for sale 5,958,000 28,765,000  
Allowance for off-balance sheet items 1,600,000   1,200,000
Loans on non-accrual status 25,034,000   25,877,000
Percentage decrease in loans on non-accrual status, excluding loans held for sale     3.30%
Delinquent loans (defined as 30 days or more past due) 18,757,000   16,274,000
Percentage decrease in delinquent loans excluding loans held for sale     15.30%
Number of real estate properties 0   3
Net carrying value of other real estate property     756,000
Net valuation adjustment     56,000
TDR loans receivable 24,900,000   30,000,000
Principal and interest due 6 months    
Reserves relating to loans included in allowance for loan losses 2,700,000   2,800,000
Net carrying value 2,000,000    
Serviced loans sold to unaffiliated parties 340,500,000 316,200,000  
Securities Pledged as Collateral [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable 1,000,000,000   568,700,000
Loans and Finance Receivables [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accrued interest receivable $ 5,300,000   $ 5,400,000
Minimum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Due period for considering loans as impaired 90 days