Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Construction Projects) (Narrative) (Details)

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Commitments And Contingencies (Construction Projects) (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
ft²
item
Dec. 31, 2020
USD ($)
ft²
item
Dec. 31, 2019
USD ($)
Commitments And Contingencies [Line Items]      
Costs of the project incurred $ 14,802 $ 13,717 $ 17,881
Number of units | item 506 326  
Amount outstanding $ 148,000 $ 25,000  
Area Of Real Estate Property | ft² 3,049,313 2,725,639  
25 Christopher Columbus [Member]      
Commitments And Contingencies [Line Items]      
Costs of the project incurred $ 425,000    
Number of units | item 750    
Amount outstanding $ 255,500    
Total project costs 469,500    
Amount to fund 169,500    
Construction Loan [Member] | 25 Christopher Columbus [Member]      
Commitments And Contingencies [Line Items]      
Amount outstanding $ 300,000