Quarterly report pursuant to Section 13 or 15(d)

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

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Investments in Unconsolidated Real Estate Joint Ventures (Impairment) (Details) - Unconsolidated Properties [Member] - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2020
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Schedule of Equity Method Investments [Line Items]        
Impairment charge   $ 0 $ 6,181 $ 0
Les Factoreries St. Sauveur Property [Member]        
Schedule of Equity Method Investments [Line Items]        
Impairment charge $ 6,181      
Impairment Losses Related to Real Estate Partnerships $ 3,091