SEGMENT REPORTING - Reconciliation of Segment Profit to Net Income Attributable to Stockholders (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting [Abstract]
Total segments’ profit	$ 69,608	$ 68,616
General and administrative	(8,842)	(8,999)
Depreciation and amortization	(30,217)	(29,901)
Interest expense, net	(16,255)	(15,729)
Other income (expense), net	10,329	6,679
NET INCOME	24,623	20,666
Net income attributable to restricted shares	(196)	(189)
Net income attributable to unitholders in the Operating Partnership	(5,167)	(4,341)
NET INCOME ATTRIBUTABLE TO AMERICAN ASSETS TRUST, INC. STOCKHOLDERS	$ 19,260	$ 16,136