SEGMENT DISCLOSURE - Reconciliation of Segment Operating Income to Net Income Attributable to Company (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other income	$ 2,694			$ 6,199			$ 9,078	$ 16,231
Asset management and other fees to related parties	(916)			(2,262)			(2,757)	(6,781)
Interest expense	(2,193)			(2,185)			(6,766)	(7,490)
General and administrative	(1,907)			(1,625)			(4,975)	(5,393)
Transaction costs	(201)			0			(201)	0
Depreciation and amortization	(5,093)			(5,061)			(15,071)	(15,167)
(LOSS) INCOME BEFORE PROVISION FOR INCOME TAXES	(45)			2,570			5,816	796
Provision for income taxes	(187)			(946)			(815)	(2,316)
NET (LOSS) INCOME	(232)	$ 2,931	$ 2,302	1,624	$ 527	$ (3,671)	5,001	(1,520)
Net (income) loss attributable to noncontrolling interests	(5)			0			(19)	4
NET (LOSS) INCOME ATTRIBUTABLE TO THE COMPANY	(237)			1,624			4,982	(1,516)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment net operating income	10,087			13,259			35,079	34,976
Expense reimbursements to related parties—corporate	(539)			(55)			(1,612)	(1,219)
Corporate and Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other income	1			0			1	1
Asset management and other fees to related parties	(916)			(2,262)			(2,757)	(6,781)
Interest expense	(2,059)			(2,080)			(6,406)	(7,012)
General and administrative	(1,353)			(753)			(3,370)	(3,629)
Transaction costs	(201)			0			(201)	0
Depreciation and amortization	(5,093)			(5,061)			(15,071)	(15,167)
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Expense reimbursements to related parties—corporate	$ (511)			$ (533)			$ (1,459)	$ (1,592)