INVESTMENTS IN REAL ESTATE - Transactions (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Feb. 17, 2023 USD ($)	Sep. 30, 2023 USD ($) ft² unit	Sep. 30, 2022 USD ($) unit	Sep. 30, 2023 USD ($) ft² unit	Sep. 30, 2022 USD ($) unit	Sep. 30, 2022 ft²	Sep. 30, 2022 commercial_unit	Sep. 30, 2022 parking_stall
Business Acquisition [Line Items]
Gain on sale		$ 0	$ 0	$ 1,104	$ 0
Percentage of ownership acquired					100.00%
4750 Wilshire JV
Business Acquisition [Line Items]
Ownership Interest		20.00%		20.00%
Channel House
Business Acquisition [Line Items]
Units | unit		333		333
Interest acquired		89.40%		89.40%
Purchase price				$ 134,615
Channel House | Retail Site
Business Acquisition [Line Items]
Rentable area (square feet) | ft²		1,864		1,864
F3 Land Site
Business Acquisition [Line Items]
Interest acquired		89.40%		89.40%
Purchase price				$ 250
466 Water Street Land Site
Business Acquisition [Line Items]
Interest acquired		89.40%		89.40%
Purchase price				$ 2,500
1150 Clay
Business Acquisition [Line Items]
Units | unit		288		288
Interest acquired		98.10%		98.10%
Purchase price				$ 145,500
Transaction costs in acquisition of real estate				$ 149
1150 Clay | Retail Site
Business Acquisition [Line Items]
Rentable area (square feet) | ft²		3,968		3,968
466 Water Street Land Site, F3 Land Site and Channel House
Business Acquisition [Line Items]
Transaction costs in acquisition of real estate				$ 37
4750 Wilshire Boulevard
Business Acquisition [Line Items]
Interest sold	80.00%			80.00%
Sales price		$ 34,400		$ 34,400
Gain on sale				1,104
Net proceeds	$ 16,700
Accounts receivable	$ 17,700			$ 3,000
3109 S Western Avenue, Los Angeles, CA
Business Acquisition [Line Items]
Units							7	6
Purchase price					$ 700
Transaction costs in acquisition of real estate					11
Rentable area (square feet) | ft²						5,900
Area of land (square feet) | ft²						5,635
1007 E 7th Street, Austin, TX
Business Acquisition [Line Items]
Purchase price					1,900
Transaction costs in acquisition of real estate					$ 52
Rentable area (square feet) | ft²						1,352
Area of land (square feet) | ft²						7,450
3022 S Western Avenue, Los Angeles, CA
Business Acquisition [Line Items]
Units | unit			119		119
Purchase price					$ 5,650
Transaction costs in acquisition of real estate					$ 192
Rentable area (square feet) | ft²						6,000
Area of land (square feet) | ft²						28,300
3101 S Western Avenue, Los Angeles, CA
Business Acquisition [Line Items]
Units | unit			40		40
Purchase price					$ 2,260
Transaction costs in acquisition of real estate					$ 22
Rentable area (square feet) | ft²						3,752
Area of land (square feet) | ft²						11,300