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Fair Value (Amount Of Gains And Losses From Changes In Fair Value Included In Earnings) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Fair Value [Abstract]        
Interest income $ 22 $ 37 $ 40 $ 53
Interest expense        
Change in fair value $ (9) $ 167 $ 3 $ 183
Total change in fair value $ 13 $ 204 $ 43 $ 236