Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
American Assets Trust, L.P.
Limited Partners' Capital Account, Units Issued	17,177,608	17,194,980
Limited Partners' Capital Account, Units Outstanding	17,177,608	17,194,980
General Partners' Capital Account, Units Issued	47,335,409	47,204,588
General Partners' Capital Account, Units Outstanding	47,335,409	47,204,588
Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	490,000,000	490,000,000
Common stock, shares issued	47,335,409	47,204,588
Common stock, shares outstanding	47,335,409	47,204,588

Face amount or stated value per share of common stock.

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