v2.4.0.6
Loan Balances (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 1,160,531 $ 1,131,401
Less: Deferred loan origination fees and discount (1,457) (1,447)
Less: Allowance for loan losses (16,585) (18,288)
Net loans 1,142,489 1,111,666
Commercial [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 181,170 193,176
Residential Real Estate [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 281,745 266,268
Nonresidential Real Estate [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 555,234 523,485
Construction [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 98,609 104,788
Consumer [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 16,170 16,618
Municipal Obligations [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 27,603 $ 27,066