NOTES AND INTEREST RECEIVABLE (Details) - Performing Loans [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Accrued interest	$ 5,117
Performing loans, total	$ 82,239
H198, LLC (Las Vegas Land) [Member]
Maturity Date	Jan. 31, 2020
Description of property	Las Vegas Land
Interest Rate	12.00%
Performing loans, total	$ 5,907
Description of Security	Secured
H198, LLC (McKinney Ranch Land) [Member]
Maturity Date	Sep. 30, 2020
Description of property	McKinney Ranch Land
Interest Rate	6.00%
Performing loans, total	$ 4,554
Description of Security	Secured
Oulan-Chikh Family Trust [Member]
Maturity Date	Mar. 31, 2021
Interest Rate	8.00%
Performing loans, total	$ 174
Description of Security	Secured
Spyglass Apartments of Ennis LP [Member]
Maturity Date	Nov. 30, 2019
Interest Rate	5.00%
Performing loans, total	$ 4,927
Description of Security	Secured
D4DS, LLC (Bellwether Ridge) [Member]
Maturity Date	May 31, 2020
Interest Rate	5.00%
Performing loans, total	$ 3,336
Description of Security	Secured
Parc at Windmill Farms [Member]
Maturity Date	May 31, 2020
Interest Rate	5.00%
Performing loans, total	$ 5,919
Description of Security	Secured
2818 Ventures LLC (Forest Pines) [Member]
Maturity Date	Nov. 30, 2020	[1]
Interest Rate	5.00%
Performing loans, total	$ 2,223
Description of Security	Secured
ABC Land & Development (Mandahl Bay) [Member]
Maturity Date	May 31, 2038
Interest Rate	6.00%
Performing loans, total	$ 1,735
Description of Security	Secured
Unified Housing Foundation, Inc. (Echo Station) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 1,481
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. (Lakeshore Villas) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 2,000
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. (Lakeshore Villas) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 6,369
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. (Limestone Ranch) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 6,000
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. (Timbers of Terrell) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. (Timbers of Terrell) [Member]
Performing loans, total	$ 1,323
Unified Housing Foundation, Inc. (Tivoli) [Member]
Maturity Date	Dec. 31, 2032	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 6,140
Description of Security	Secured	[1]
Unified Housing Foundation, Inc. #2 [Member]
Maturity Date	Dec. 31, 2018	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 3,994
Description of Security	Unsecured	[1]
Unified Housing Foundation, Inc. #3 [Member]
Maturity Date	Dec. 31, 2018	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 6,407
Description of Security	Unsecured	[1]
Unified Housing Foundation, Inc. #4 [Member]
Maturity Date	Jun. 30, 2020	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 5,760
Description of Security	Unsecured	[1]
Unified Housing Foundation, Inc. [Member]
Maturity Date	Mar. 31, 2021	[1]
Interest Rate	12.00%	[1]
Performing loans, total	$ 5,314
Description of Security	Unsecured	[1]
Other Related Party Notes [Member]
Description of maturity date	Various	[1]
Description of Interest Rate	Various	[1]
Performing loans, total	$ 510
Description of Security	Various secured interests	[1]
Other Non-Related Party Notes [Member]
Description of maturity date	Various
Description of Interest Rate	Various
Description of Security	Various secured interests
Other Related Party-Non Notes [Member]
Performing loans, total	$ 796
Other Non-Related Party Notes [Member]
Description of maturity date	Various
Description of Interest Rate	Various
Performing loans, total	$ 300
Description of Security	Various secured interests

[1] Related party notes.