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Derivative Financial Instruments (Details) (Derivatives not designated as hedging instruments [Member], Interest rate contracts [Member], USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Other Assets [Member]
   
Fair value of the Company's derivative financial instruments, as well as their classification on the balance sheet    
Asset Derivatives $ 104 $ 254
Other Liabilities [Member]
   
Fair value of the Company's derivative financial instruments, as well as their classification on the balance sheet    
Liability Derivatives $ 104 $ 254