Quarterly report pursuant to Section 13 or 15(d)

Investments In And Advances To Unconsolidated Real Estate Joint Ventures (Investments In Unconsolidated Real Estate Joint Ventures) (Details)

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Investments In And Advances To Unconsolidated Real Estate Joint Ventures (Investments In Unconsolidated Real Estate Joint Ventures) (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Feb. 28, 2021
Dec. 31, 2020
Mar. 31, 2020
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures $ 60,402   $ 58,010 $ 59,373
Altis at Grand Central Capital, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,166   2,287  
Altis Promenade Capital, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 1,952   1,964  
Altis Ludlam - Miami Investor, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 9,931   9,653  
Altis Grand at The Preserve (Suncoast) [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 1,132   1,086  
Altis Pembroke Gardens, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures     310  
Altis Wiregrass, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures     163  
Altis Little Havana [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 851   844  
Altis Lake Willis (Vineland Pointe) [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 5,829   5,446  
Altis Miramar East/West [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,841   2,818  
The Altman Companies, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 15,056   15,222  
ABBX Guaranty, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 3,750   3,750  
Bayview [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 1,364   1,563  
Marbella [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 4,820   6,971  
Chapel Trail [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 153   153  
The Main Las Olas [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,541   2,462  
Sky Cove, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 3,104   3,287  
Sky Cove South [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 4,877 $ 4,900    
Other [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures $ 35   $ 31