Quarterly report pursuant to Section 13 or 15(d)

Deferred Charges, Goodwill And Other Assets, Net (Schedule Of Cash Flow Hedging, Derivative Financial Instruments On The Income Statement) (Details)

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Deferred Charges, Goodwill And Other Assets, Net (Schedule Of Cash Flow Hedging, Derivative Financial Instruments On The Income Statement) (Details) - Not Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Interest Expense [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)   $ 1,740
Interest And Other Investment Income (Loss) [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion, Reclassification for Forecasted Transactions No Longer Probable of Occurring and Amount Excluded from Effectiveness Testing)   (1,012)
Interest Rate Swap [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) $ (3,807) $ (10,994)
Interest Rate Swap [Member] | Interest Expense [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) 893  
Interest Rate Swap [Member] | Interest And Other Investment Income (Loss) [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion, Reclassification for Forecasted Transactions No Longer Probable of Occurring and Amount Excluded from Effectiveness Testing) $ (99)