Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Assets
Operating real estate	$ 1,653,329	$ 1,117,831
Construction in progress	4,285	925
Held for development	22,755	8,081
Total Real estate, at cost	1,680,369	1,126,837
Accumulated depreciation	(223,624)	(209,666)
Net real estate	1,456,745	917,171
Cash and cash equivalents	123,222	41,953
Restricted cash	8,760	4,481
Marketable securities	29,596
Accounts receivable, net	6,525	1,564
Deferred rent receivables, net	22,792	19,486
Notes receivable from affiliate		21,769
Investment in real estate joint ventures		39,816
Prepaid expenses and other assets	77,121	43,718
Assets of discontinued operations		27,399
Total assets	1,724,761	1,117,357
Liabilities and equity
Secured notes payable	943,900	828,685
Unsecured notes payable		38,013
Notes payable to affiliates		5,266
Accounts payable and accrued expenses	27,769	11,284
Security deposits payable	4,664	2,510
Other liabilities and deferred credits	57,955	38,846
Distributions in excess of earnings on real estate joint ventures		14,060
Liabilities of discontinued operations		23,572
Total liabilities	1,034,288	962,236
Commitments and contingencies (Note 11)
Equity:
Owners' equity		121,874
American Assets Trust, Inc. stockholders' equity
Common stock $0.01 par value, 490,000,000 authorized, 39,283,796 outstanding at September 30, 2011	393
Additional paid-in capital	652,932
Accumulated dividends in excess of net income	(20,233)
Total American Assets Trust, Inc. stockholders' equity	633,092
Noncontrolling interests
Owners in consolidated real estate entities		33,247
Unitholders in the Operating Partnership	57,381
Total Noncontrolling interests	57,381	33,247
Total equity	690,473	155,121
Total liabilities and equity	$ 1,724,761	$ 1,117,357