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 5 Months Ended 9 Months Ended
Jun. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
May 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]              
Differences in basis   $ 4,100     $ 4,100   $ 4,200
Unconsolidated Properties [Member]              
Schedule of Equity Method Investments [Line Items]              
Asset impairment   $ 0 $ 18,042   $ 0 $ 18,042  
Unconsolidated Properties [Member] | Charlotte [Member] | Mortgages [Member]              
Schedule of Equity Method Investments [Line Items]              
Principal $ 100,000     $ 90,000      
Interest rate 4.30%            
Basis spread on variable rate       1.45%      
Net loan proceeds $ 9,300            
Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member]              
Schedule of Equity Method Investments [Line Items]              
Asset impairment     18,000        
Our share of impairment charge     $ 9,000