Investments In Unconsolidated Real Estate Joint Ventures (Investments In Unconsolidated Real Estate Joint Ventures) (Details) - USD ($) $ in Thousands	1 Months Ended
	Nov. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 57,330	$ 64,738
Altis At Lakeline - Austin Investors LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 242	4,531
Investments in unconsolidated real estate joint ventures, Percent		34.47%
Altis at Grand Central Capital, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 2,653	2,549
Investments in unconsolidated real estate joint ventures, Percent		11.07%
Altis Promenade Capital, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 2,126	2,195
Investments in unconsolidated real estate joint ventures, Percent		6.61%
Altis at Bonterra - Hialeah, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 618	21,602
Investments in unconsolidated real estate joint ventures, Percent		96.73%
Altis Ludlam - Miami Investor, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,081	675
Investments in unconsolidated real estate joint ventures, Percent		33.30%
Altis Suncoast Manager, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 753	1,857
Investments in unconsolidated real estate joint ventures, Percent		33.30%
Altis Pembroke Gardens, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,277	1,284
Investments in unconsolidated real estate joint ventures, Percent		0.41%
Altis Fairways, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,880	1,876
Investments in unconsolidated real estate joint ventures, Percent		0.42%
Altis Wiregrass, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,792	1,897
Investments in unconsolidated real estate joint ventures, Percent		2.22%
Altis LH-Miami Manager, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 811
Investments in unconsolidated real estate joint ventures, Percent		3.43%
Altis Vineland Pointe [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 4,712
Investments in unconsolidated real estate joint ventures, Percent		50.00%
Altis Miramar East/West [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 2,631
Investments in unconsolidated real estate joint ventures, Percent		5.00%
The Altman Companies, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 14,745	14,893
Investments in unconsolidated real estate joint ventures, Percent		50.00%
Investments in unconsolidated real estate joint ventures, transaction costs	$ 2,300
ABBX Guaranty, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 3,750	2,500
Investments in unconsolidated real estate joint ventures, Percent		50.00%
Sunrise and Bayview Partners, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,562	1,439
Investments in unconsolidated real estate joint ventures, Percent		50.00%
PGA Design Center Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 996	691
Investments in unconsolidated real estate joint ventures, Percent		40.00%
CCB Miramar, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 5,999	1,575
Investments in unconsolidated real estate joint ventures, Percent		70.00%
BBX/Label Chapel Trail Development, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 1,126	4,515
Investments in unconsolidated real estate joint ventures, Percent		46.75%
L03/212 Partners, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 2,087
Investments in unconsolidated real estate joint ventures, Percent		3.41%
PGA Lender, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 2,111
Investments in unconsolidated real estate joint ventures, Percent		45.88%
Sky Cove, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 4,178
Investments in unconsolidated real estate joint ventures, Percent		26.25%
All Other Investments In Real Estate Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures		$ 200	$ 659