SELF STORAGE PROPERTIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Real Estate [Abstract]
Land	$ 1,031,235	$ 1,047,416
Buildings and improvements	4,771,184	4,804,789
Furniture and equipment	12,435	11,929
Total self storage properties	5,814,854	5,864,134
Less accumulated depreciation	(1,213,537)	(1,051,638)
Self storage properties, net	4,601,317	4,812,496
Depreciation expense related to self storage properties	$ 179,000	$ 181,300	$ 210,200