Annual report pursuant to Section 13 and 15(d)

Loans - Loans Receivable (Parenthetical) (Detail)

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Loans - Loans Receivable (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans $ 2,234,089 $ 2,048,560
Owner Occupied Real Estate [Member] | Commercial term [Member] | Commercial and Industrial loans [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 822,000 774,200
Owner Occupied Real Estate [Member] | SBA loans [Member] | Commercial and Industrial loans [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 144,500 128,400
Owner Occupied Real Estate [Member] | Commercial lines of credit [Member] | Commercial and Industrial loans [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans $ 535 $ 1,400