REAL ESTATE - Schedule of Revenue and Expenses of Real Estate Held-for-Sale (Details) - Disposal Group, Non-Sale Disposition - 201 Spear Street - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues:
Rental income	$ 197	$ 7,930	$ 20,999
Other operating income	9	507	670
Total revenues	206	8,437	21,669
Expenses
Operating, maintenance, and management	52	3,773	4,140
Real estate taxes and insurance	69	2,701	2,831
Asset management fees to affiliate	26	789	1,054
General and administrative expenses	93	113	67
Depreciation and amortization	0	3,941	5,617
Interest expense	419	10,001	4,256
Impairment charge	0	45,459	0
Total expenses	$ 659	$ 66,777	$ 17,965