NOTES AND BONDS PAYABLE - Schedule of Long-Term Debt Instruments (Details) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Jul. 31, 2025	Sep. 30, 2025	Mar. 28, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total notes and bonds payable principal outstanding		$ 877,037		$ 876,767
Deferred financing costs and debt discount and premium, net		(9,316)		(11,475)
Total notes and bonds payable, net		$ 867,721		865,292
Bonds Payable | Minimum
Debt Instrument [Line Items]
Contractual interest rate, percentage		5.18%
Bonds Payable | Maximum
Debt Instrument [Line Items]
Contractual interest rate, percentage		11.00%
Series B Bonds | Bonds Payable
Debt Instrument [Line Items]
Notes payable		$ 117,434		127,486
Contractual interest rate, percentage		5.18%
Series B Bonds | Mortgages
Debt Instrument [Line Items]
Effective interest rate, percentage		5.18%
Series D Bonds | Bonds Payable
Debt Instrument [Line Items]
Notes payable		$ 177,575		161,436
Contractual interest rate, percentage		11.00%
Series D Bonds | Mortgages
Debt Instrument [Line Items]
Effective interest rate, percentage		11.00%
PORT Mortgage Loan 1 | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 31,793		31,792
Contractual interest rate, percentage		4.74%
Effective interest rate, percentage		4.74%
PORT Mortgage Loan 2 | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 10,523		10,523
Contractual interest rate, percentage		4.72%
Effective interest rate, percentage		4.72%
PORT MetLife Loan 1 | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 54,796		55,939
Contractual interest rate, percentage		3.90%
Effective interest rate, percentage		3.90%
PORT MetLife Loan 2 | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 93,043		93,275
Contractual interest rate, percentage		3.99%
Effective interest rate, percentage		3.99%
Crown Pointe Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 54,738		54,738
Basis spread on variable rate		2.30%
Effective interest rate, percentage		11.54%
Lincoln Court Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 31,325		31,325
Basis spread on variable rate		3.25%
Effective interest rate, percentage		12.49%
Madison Square Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 20,040		20,722
Basis spread on variable rate		3.00%
Effective interest rate, percentage		13.50%
Interest rate during period		8.50%
Madison Square Mortgage Loan | Mortgages | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Bank of America Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 152,636		156,836
Basis spread on variable rate		2.75%
Effective interest rate, percentage		9.99%
WhiteHawk Loan | Mortgages
Debt Instrument [Line Items]
Notes payable	$ 80,000	$ 80,000		0
Basis spread on variable rate	6.50%	6.50%
Effective interest rate, percentage		13.74%
Variable rate, floor	3.50%
Q&C Hotel Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 21,847		21,966
Basis spread on variable rate		3.50%
Effective interest rate, percentage		12.74%
Interest rate during period		7.50%
Q&C Hotel Mortgage Loan | Mortgages | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		3.50%
Richardson Office Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 11,881		12,018
Basis spread on variable rate		3.50%
Effective interest rate, percentage		12.74%
Eight & Nine Corporate Centre Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 19,406		20,000
Basis spread on variable rate		4.90%
Effective interest rate, percentage		14.14%
Interest rate during period		8.90%
Maximum borrowing capacity			$ 23,500
Eight & Nine Corporate Centre Mortgage Loan | Mortgages | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		4.90%
Series C Bonds | Bonds Payable
Debt Instrument [Line Items]
Notes payable		$ 0		39,049
Georgia 400 Center Mortgage Loan | Mortgages
Debt Instrument [Line Items]
Notes payable		$ 0		$ 39,662