Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Schedule Of Rental Property Improvements) (Details)

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Significant Accounting Policies (Schedule Of Rental Property Improvements) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Land held for development (including pre-development costs, if any) $ 315,585 $ 341,496
Development and construction in progress, including land 726,599 694,768
Total 1,042,184 1,036,264
Buildings and improvement 147,900 150,900
Development [Member]    
Property, Plant and Equipment [Line Items]    
Land 68,800 $ 68,800
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]    
Property, Plant and Equipment [Line Items]    
Buildings and improvement 3,400  
Land $ 92,700