Quarterly report pursuant to Section 13 or 15(d)

Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details)

v3.19.2
Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]          
Derivatives, Net liability position $ 0   $ 0    
Collateral for fair value of assets 0   0    
Credit Risk Contract [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Net liability 0   0    
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Derivative notional amount 425,000,000   425,000,000    
Ineffective gain (loss) in interest expense 0 $ 100,000 0 $ 174,000  
Estimated additional amount to be reclassified to interest expense     1,100,000    
Notional Value         $ 90,000,000
Terminated notional amount 160,000,000   160,000,000    
Interest And Other Investment Income (Loss) [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Reclassification of a gain $ 515,000 $ (100,000) $ 1,794,000 $ (174,000)