Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUE:
Rental income	$ 59,915	$ 53,278	$ 169,199	$ 146,860
Other property income	2,921	3,015	8,484	7,416
Total revenue	62,836	56,293	177,683	154,276
EXPENSES:
Rental expenses	17,024	16,187	48,219	42,720
Real estate taxes	6,301	5,390	17,689	14,800
General and administrative	3,959	3,733	11,716	10,786
Depreciation and amortization	16,432	15,827	46,356	41,916
Total operating expenses	43,716	41,137	123,980	110,222
OPERATING INCOME	19,120	15,156	53,703	44,054
Interest expense	(14,690)	(14,738)	(43,522)	(41,791)
Early extinguishment of debt				(25,867)
Loan transfer and consent fees				(9,019)
Gain on acquisition				46,371
Other income (expense), net	68	(108)	(188)	(179)
INCOME FROM CONTINUING OPERATIONS	4,498	310	9,993	13,569
DISCONTINUED OPERATIONS
(Loss) income from discontinued operations	(213)	327	(213)	1,119
Gain on sale of real estate property		3,981		3,981
Results from discontinued operations	(213)	4,308	(213)	5,100
NET INCOME	4,285	4,618	9,780	18,669
Net income attributable to restricted shares	(133)	(132)	(396)	(350)
Net loss attributable to Predecessor's noncontrolling interests in consolidated real estate entities				2,458
Net income attributable to Predecessor's controlled owners' equity				(16,995)
Net income attributable to unitholders in the Operating Partnership	(1,335)	(1,434)	(3,022)	(1,209)
NET INCOME ATTRIBUTABLE TO AMERICAN ASSETS TRUST. INC. STOCKHOLDERS	$ 2,817	$ 3,052	$ 6,362	$ 2,573
EARNINGS PER COMMON SHARE, BASIC
Continuing operations	$ 0.08		$ 0.17	$ (0.03)
Discontinued operations		$ 0.08		$ 0.10
Basic net income attributable to common stockholders per share	$ 0.08	$ 0.08	$ 0.17	$ 0.07
Weighted average shares of common stock outstanding-basic	38,673,617	38,655,084	38,663,352	36,106,397
EARNINGS PER COMMON SHARE, DILUTED
Continuing operations	$ 0.08		$ 0.17	$ (0.03)
Discontinued operations		$ 0.08		$ 0.10
Diluted net income attributable to common stockholders per share	$ 0.08	$ 0.08	$ 0.17	$ 0.07
Weighted average shares of common stock outstanding - diluted	57,054,425	57,051,173	57,054,425	53,265,648
Dividends declared per common share	$ 0.21	$ 0.21	$ 0.63	$ 0.59