Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]    
Collateral for fair value of assets $ 0  
Credit Risk Contract [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Net liability 0  
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative notional amount 0  
Estimated additional amount to be reclassified to interest expense 0  
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 $ 0 $ 1,279,000