BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accounting Policies [Abstract]
Fixed lease income - operating leases	$ 60,667	$ 59,387	$ 123,932	$ 116,061
Variable lease income - operating leases	3,017	2,300	6,517	4,822
Other property revenue	1,092	1,429	2,224	2,547
Total revenue	64,776	63,116	132,673	123,430
Gain (loss) on sale of real estate and other investments	$ (67)	$ 27	$ 60,092	$ 27