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Accumulated Other Comprehensive Income (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Accumulated Other Comprehensive Income [Abstract]      
Decreases to fair market value during period   $ (287)  
Decreases due to realization of a gain (33)    
Net Current-Period other comprehensive loss, before tax   (320)  
Accumulated Other Comprehensive Income Loss $ (318)   $ 2