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Derivative Financial Instruments (Location and Fair Value of Derivative Instruments) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Derivatives not designated as hedging instruments, fair value    
Interest rate swap contracts not designated as hedging instruments - assets, gross $ 519 $ 575
Interest rate swap contracts not designated as hedging instruments - liabilities, gross $ 519 $ 575
Other assets    
Derivatives not designated as hedging instruments, fair value    
Description of location of interest rate derivative instruments not designated as hedging instruments on balance sheet Other assets Other assets
Other liabilities    
Derivatives not designated as hedging instruments, fair value    
Description of location of interest rate derivative instruments not designated as hedging instruments on balance sheet Other liabilities Other liabilities