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DERIVATIVE AND HEDGING ACTIVITIES - Summary of Interest Rate Swap Terms (Details) - Interest Rate Swap, 1/5/2027 - Cash Flow Hedging - Designated as Hedging Instrument - American Assets Trust, L.P.	Sep. 30, 2025 USD ($)
Bank of America, N.A.
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 50,000,000
Fair Value	1,313,000
Wells Fargo Bank, N.A.
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	50,000,000
Fair Value	$ 1,316,000

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