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) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]    
Total Amount of Interest Expense presented in the consolidated statements $ (24,774) $ (20,075)
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Cash Flow Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in OCI on Derivative (1,601) 5,226
Total Amount of Interest Expense presented in the consolidated statements (24,774) (20,075)
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income 1,571 80
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Interest And Other Investment Income (Loss) [Member] | Cash Flow Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivative (Reclassification for Forecasted Transactions No Longer Probable of Occurring) $ 1,279 $ (74)