QUARTERLY FINANCIAL INFORMATION (UNAUDITED) - Selected Quarterly Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Quarterly Financial Information [Line Items] | |||||||||||
| Total revenue | $ 110,086 | $ 109,578 | $ 107,933 | $ 108,607 | $ 113,460 | $ 122,810 | $ 110,890 | $ 110,695 | $ 436,204 | $ 457,855 | $ 441,164 |
| Operating income | 23,215 | 24,767 | 25,978 | 71,972 | 30,048 | 37,808 | 30,794 | 30,549 | 145,932 | 129,199 | 121,747 |
| Net income | 4,221 | 5,921 | 7,121 | 54,107 | 11,584 | 21,318 | 15,294 | 24,623 | 71,370 | 72,819 | 64,690 |
| Net income attributable to restricted shares | (236) | (207) | (206) | (203) | (202) | (194) | (195) | (196) | (852) | (787) | (761) |
| Net income attributable to unitholders in the Operating Partnership | (837) | (1,205) | (1,459) | (11,369) | (2,405) | (4,467) | (3,195) | (5,167) | $ (14,870) | $ (15,234) | $ (13,551) |
| Net income attributable to American Assets Trust, Inc. stockholders | $ 3,148 | $ 4,509 | $ 5,456 | $ 42,535 | $ 8,977 | $ 16,657 | $ 11,904 | $ 19,260 | |||
| Net income per share attributable to common stockholders - basic (in USD per share) | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.70 | $ 0.15 | $ 0.28 | $ 0.20 | $ 0.32 | $ 0.92 | $ 0.94 | $ 0.84 |
| Net income per share attributable to common stockholders - diluted (in USD per share) | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.70 | $ 0.15 | $ 0.28 | $ 0.20 | $ 0.32 | $ 0.92 | $ 0.94 | $ 0.84 |
| American Assets Trust, L.P. | |||||||||||
| Quarterly Financial Information [Line Items] | |||||||||||
| Total revenue | $ 110,086 | $ 109,578 | $ 107,933 | $ 108,607 | $ 113,460 | $ 122,810 | $ 110,890 | $ 110,695 | $ 436,204 | $ 457,855 | $ 441,164 |
| Operating income | 23,215 | 24,767 | 25,978 | 71,972 | 30,048 | 37,808 | 30,794 | 30,549 | 145,932 | 129,199 | 121,747 |
| Net income | 4,221 | 5,921 | 7,121 | 54,107 | 11,584 | 21,318 | 15,294 | 24,623 | 71,370 | 72,819 | 64,690 |
| Net income attributable to restricted shares | (236) | (207) | (206) | (203) | (202) | (194) | (195) | (196) | $ (852) | $ (787) | $ (761) |
| Net income attributable to American Assets Trust, L.P. unit holders | $ 3,985 | $ 5,714 | $ 6,915 | $ 53,904 | $ 11,382 | $ 21,124 | $ 15,099 | $ 24,427 | |||
| Net income per share attributable to common stockholders - basic (in USD per share) | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.70 | $ 0.15 | $ 0.28 | $ 0.20 | $ 0.32 | $ 0.92 | $ 0.94 | $ 0.84 |
| Net income per share attributable to common stockholders - diluted (in USD per share) | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.70 | $ 0.15 | $ 0.28 | $ 0.20 | $ 0.32 | $ 0.92 | $ 0.94 | $ 0.84 |
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- Definition Net income attributable to restricted share. No definition available.
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- Definition [Line Items] for Quarterly Financial Information [Table] No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Aggregate amount of net income allocated to general partners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) attributable to redeemable noncontrolling partner in an operating partnership. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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