SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Carrying cost
Balance at beginning of period	$ 1,408,557	$ 1,452,001	$ 1,484,571
Acquisitions	51,817		13,581
Improvements	9,099	6,298	23,612
Capitalized interest			354
Cost of real estate sold	(55,346)	(49,742)	(66,140)
Impairment loss from real estate investments	(3,422)		(3,977)
Ending balance	1,410,705	1,408,557	1,452,001
Accumulated depreciation
Balance at beginning of period	374,606	349,643	347,755
Depreciation expense	37,394	38,192	38,945
Cost of real estate sold	(20,513)	(13,229)	(37,057)
Ending balance	$ 391,487	$ 374,606	$ 349,643