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Loans (Loans Serviced for Others, by Type of Loan) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Balance of loans being serviced $ 204,804 $ 143,978
Residential Mortgage [Member]
   
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Balance of loans being serviced 144,360 87,049
Commercial Loan [Member]
   
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Balance of loans being serviced $ 60,444 $ 56,929