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)
$ in Thousands
 1 Months Ended 3 Months Ended
Jan. 31, 2019
ft²
item
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Mar. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]        
Investments in unconsolidated real estate joint ventures   $ 67,382 $ 64,738 [1] $ 48,841
Expected total capital contribution of investment   $ 4,000    
The Altman Companies, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Consolidated method ownership percentage   50.00%    
Altis Ludlam - Miami Investor, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in unconsolidated real estate joint ventures   $ 747 675  
The Altman Companies, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in unconsolidated real estate joint ventures   15,521 14,893  
ABBX Guaranty, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in unconsolidated real estate joint ventures   2,500 $ 2,500  
L03/212 Partners, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Area of retail space | ft² 365,000      
Number Of Multifamily Apartment Developments | item 341      
Number of square feet of ground floor retail | ft² 45,000      
Investments in unconsolidated real estate joint ventures   $ 1,519    
[1] See Note 1 for a summary of adjustments.