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Derivative Financial Instruments (Summary Of The Effect Of The Company's Derivative Financial Instruments On Its Accompanying Consolidated Statements Of Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Derivative Financial Instruments [Abstract]        
Amount of gain recognized in AOCI on derivatives (effective portion) $ 76 $ 16 $ 131 $ 34
Amount of gain reclassified from AOCI into interest expense (effective portion) $ 76 $ 16 $ 131 $ 34