Consolidated Balance Sheets - LP (Parenthetical) - American Assets Trust, L.P. - shares	Mar. 31, 2023	Dec. 31, 2022
Limited partners' capital, units outstanding (in shares)	16,181,537	16,181,537
Limited partners' capital, units issued (in shares)	16,181,537	16,181,537
General partners' capital, units issued (in shares)	60,717,835	60,718,653
General partners' capital, units outstanding (in shares)	60,717,835	60,718,653