Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Operating real estate	$ 1,691,809	$ 1,659,106
Construction in progress	27,612	3,495
Held for development	14,795	24,675
Total Real estate, at cost	1,734,216	1,687,276
Accumulated depreciation	(255,485)	(234,595)
Net real estate	1,478,731	1,452,681
Cash and cash equivalents	98,584	112,723
Restricted cash	10,973	9,216
Marketable securities	24,287	28,235
Accounts receivable, net	4,997	6,847
Deferred rent receivables, net	27,227	23,294
Other assets, net	68,649	76,285
Total assets	1,713,448	1,709,281
Liabilities and equity
Secured notes payable	964,538	943,479
Accounts payable and accrued expenses	27,317	25,476
Security deposits payable	4,874	4,790
Other liabilities and deferred credits	54,316	55,808
Total liabilities	1,051,045	1,029,553
Commitments and contingencies (Note 10)
American Assets Trust, Inc. stockholders' equity
Common stock 0.01 par value, 490,000,000 shares authorized, 39,285,156 and 39,283,796 shares outstanding at June 30, 2012 and December 31, 2011, respectively	393	393
Additional paid-in capital	655,087	653,645
Accumulated dividends in excess of net income	(40,699)	(28,007)
Total American Assets Trust, Inc. stockholders' equity	614,781	626,031
Noncontrolling interests	47,622	53,697
Total equity	662,403	679,728
Total liabilities and equity	$ 1,713,448	$ 1,709,281