Quarterly report pursuant to Section 13 or 15(d)

Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details)

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Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2021
Feb. 28, 2021
Jan. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]                
Differences in basis       $ 3,400   $ 3,400   $ 3,600
Unconsolidated Properties [Member]                
Schedule of Equity Method Investments [Line Items]                
Gain on sale of assets       $ 0 $ 0 $ 503 $ 0  
Galveston/Houston [Member] | Mortgages [Member] | Unconsolidated Properties [Member]                
Schedule of Equity Method Investments [Line Items]                
Debt Instrument, Unused Borrowing Capacity, Amount   $ 64,500 $ 80,000          
Basis spread on variable rate   1.85% 1.65%          
Les Factoreries St. Sauveur Property [Member] | Unconsolidated Properties [Member]                
Schedule of Equity Method Investments [Line Items]                
Net Sales Proceeds $ 9,400              
Our Share of Proceeds From Sale Of Asset 4,700              
Gain on sale of assets (3,700)              
Foreign currency loss $ (3,600)