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Loans - Composition of Loan Portfolio (Parenthetical) (Details) (Lease financing, unearned income, USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Lease financing, unearned income
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unearned income $ 7,771 $ 5,723