v3.20.2

Investments In And Advances To Unconsolidated Real Estate Joint Ventures (Narrative) (Details) $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended
	Jun. 30, 2020 USD ($) ft² property item	Apr. 30, 2020 USD ($)	Mar. 31, 2020 property	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				$ 60,648	$ 53,739	$ 60,648	$ 53,739	$ 57,330
Equity in earning of unconsolidated real estate joint ventures				$ (646)	28,534	$ 50	37,276
The Altman Companies, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Consolidated method ownership percentage				50.00%		50.00%
PGA Design Center Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				$ 3		$ 3		996
Altis Ludlam - Miami Investor, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				9,378		9,378		1,081
The Altman Companies, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				15,589		15,589		14,745
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		3,750
Altis at Bonterra - Hialeah, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures								618
Equity in earning of unconsolidated real estate joint ventures					$ 29,100		$ 29,100
L03/212 Partners, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				2,179		2,179		2,087
PGA Lender, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				2		2		2,111
Sky Cove, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				4,146		4,146		4,178
Altis LH-Miami Manager, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				837		837		811
Altis Vineland Pointe [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				5,355		5,355		4,712
Altis Wiregrass, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures				$ 163		163		1,792
Number of multi-family apartment developments | property			392
Distribution from investee		$ 2,300
Equity in earning of unconsolidated real estate joint ventures						$ 800
BBXRE [Member] | Altis Ludlam - Miami Investor, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated real estate joint ventures	$ 8,500							$ 1,100
Area of retail space | ft²	7,500
Number of multi-family apartment developments | property	312
Distribution from investee	$ 500
Equity in earning of unconsolidated real estate joint ventures	$ 11,900
Number of extensions | item	3
Period of each extension	1 year

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