SEGMENT DISCLOSURE - Reconciliation of Segment Operating Income to Net Income Attributable to Company (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other income	$ 3,102		$ 6,234		$ 6,384	$ 10,032
Asset management and other fees to related parties	(920)		(2,260)		(1,841)	(4,519)
Interest expense	(2,403)		(2,673)		(4,573)	(5,305)
General and administrative	(1,253)		(1,146)		(3,068)	(3,768)
Depreciation and amortization	(4,974)		(5,069)		(9,978)	(10,106)
INCOME (LOSS) BEFORE PROVISION FOR INCOME TAXES	3,252		1,523		5,861	(1,774)
Provision for income taxes	(321)		(996)		(628)	(1,370)
NET INCOME (LOSS)	2,931	$ 2,302	527	$ (3,671)	5,233	(3,144)
Net (income) loss attributable to noncontrolling interests	(9)		3		(14)	4
NET INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY	2,922		530		5,219	(3,140)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment net operating income	12,836		12,631		24,992	21,717
Expense reimbursements to related parties—corporate	(604)		(433)		(1,073)	(1,164)
Corporate and Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other income	0		1		0	1
Asset management and other fees to related parties	(920)		(2,260)		(1,841)	(4,519)
Interest expense	(2,284)		(2,491)		(4,347)	(4,932)
General and administrative	(880)		(835)		(2,017)	(2,876)
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Expense reimbursements to related parties—corporate	$ (526)		$ (454)		$ (948)	$ (1,059)