Annual report pursuant to Section 13 and 15(d)

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

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Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]      
Revenue from leases $ 282,791,000 $ 272,970,000 $ 302,409,000
Credit Risk Contract [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivatives, Net liability position 0    
Cash Flow Hedging [Member] | Interest Rate Cap [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of increase in the fair value of derivatives 10,000    
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Estimated additional amount to be reclassified to interest expense 35,000    
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Cap [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional Value $ 75,000,000    
Not Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of increase in the fair value of derivatives     (4,682,000)
Interest And Other Investment Income (Loss) [Member] | Not Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Reclassification of a gain     $ 1,926,000