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
Sep. 30, 2021
Feb. 28, 2021
Dec. 31, 2020
Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures $ 49,051   $ 58,010 $ 60,648
Altis at Grand Central Capital, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 729   2,287  
Altis Promenade Capital, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures     1,964  
Altis Ludlam - Miami Investor, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 10,520   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 194   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 864   844  
Altis Lake Willis (Vineland Pointe) Phase 1 [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 261      
Altis Lake Willis (Vineland Pointe) Phase 2 [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,516   5,446  
Altis Miramar East/West [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,867   2,818  
The Altman Companies, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 16,905   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 1,447   1,563  
Marbella [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 310   6,971  
Chapel Trail [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 137   153  
The Main Las Olas [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 2,307   2,462  
Sky Cove, LLC [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 1,446   3,287  
Sky Cove South [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures 4,768 $ 4,900    
Other [Member]        
Schedule of Equity Method Investments [Line Items]        
Investments in and advances to unconsolidated real estate joint ventures $ 30   $ 31