v3.25.4

EQUITY OF AMERICAN ASSETS TRUST, INC. - Narrative (Details) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Dec. 03, 2021 USD ($) sales_agent | Dec. 31, 2025 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares
Equity [Line Items] |  |  |  |
Preferred stock, shares authorized (in shares) |  | 10,000,000 |  |
Preferred stock, par-value (in dollars per share) | $ / shares |  | $ 0.01 |  |
Preferred stock, shares issued (in shares) |  | 0 |  |
Equity incentive award plan, common stock authorized for issuance (in shares) |  | 4,054,411 |  |
Equity incentive award plan, common stock available for future issuance (in shares) |  | 1,296,829 |  |
Noncash compensation expense | $ |  | $ 7.4 | $ 7.1 | $ 8.8
Unrecognized compensation expense | $ |  | $ 9.3 |  |
Restricted Stock |  |  |  |
Equity [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Unrecognized compensation expense, weighted-average recognition period (in years) |  | 1 year 6 months 21 days |  |
Restricted Stock | Period one |  |  |  |
Equity [Line Items] |  |  |  |
Performance period |  | 1 year |  |
Restricted Stock | Period two |  |  |  |
Equity [Line Items] |  |  |  |
Performance period |  | 2 years |  |
Restricted Stock | Period three |  |  |  |
Equity [Line Items] |  |  |  |
Performance period |  | 3 years |  |
At The Market Equity Program |  |  |  |
Equity [Line Items] |  |  |  |
Aggregate offering price of common share | $ | $ 250.0 |  |  |
Common shares issued (in shares) |  | 0 |  |
Remaining capacity available for issuance | $ |  | $ 250.0 |  |
$250.0 Million ATM | At The Market Equity Program |  |  |  |
Equity [Line Items] |  |  |  |
Number of sales agents | sales_agent | 5 |  |  |
Operating Partnership Units | American Assets Trust, L.P. |  |  |  |
Equity [Line Items] |  |  |  |
Weighted average unvested shares outstanding (in shares) |  | 609,312 | 583,512 | 573,344

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