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Financial Instruments with Off-Balance-Sheet Risk (Schedule of Financial Instruments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Commitments to extend credit [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Financial instruments off-balance sheet credit risks $ 370,787 $ 366,909
Standby letters of credit [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Financial instruments off-balance sheet credit risks $ 16,881 $ 14,389