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Fair Value (Amount Of Gains And Losses From Changes In Fair Value Included In Earnings) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Fair Value [Abstract]        
Interest income $ 13 $ 15 $ 29 $ 34
Change in fair value 26 9 6 13
Total change in fair value $ 39 $ 24 $ 35 $ 47