Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Operating real estate	$ 3,164,594	$ 3,155,280
Construction in progress	93,001	91,047
Held for development	547	547
Total Real estate, at cost	3,258,142	3,246,874
Accumulated depreciation	(776,825)	(754,140)
Real estate, net	2,481,317	2,492,734
Cash and cash equivalents	380,434	137,333
Restricted cash	1,716	1,716
Accounts receivable, net	6,031	6,938
Deferred rent receivables, net	76,690	72,476
Other assets, net	103,158	106,112
Total assets	3,049,346	2,817,309
LIABILITIES AND EQUITY
Secured notes payable, net	110,934	110,923
Unsecured notes payable, net	1,536,890	1,196,677
Unsecured line of credit, net	0	99,151
Accounts payable and accrued expenses	71,226	59,262
Security deposits payable	6,629	6,590
Other liabilities and deferred credits, net	88,228	91,300
Total liabilities	1,813,907	1,563,903
Commitments and contingencies (Note 11)
American Assets Trust, Inc. stockholders’ equity
Common stock, $0.01 par value, 490,000,000 shares authorized, 60,472,286 and 60,476,292 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	605	605
Additional paid-in capital	1,447,128	1,445,644
Accumulated dividends in excess of net income	(192,098)	(176,560)
Accumulated other comprehensive income	1,964	1,753
Total American Assets Trust, Inc. stockholders’ equity	1,257,599	1,271,442
Noncontrolling interests	(22,160)	(18,036)
Total equity	1,235,439	1,253,406
CAPITAL:
TOTAL LIABILITIES AND EQUITY	3,049,346	2,817,309
American Assets Trust, L.P.
ASSETS
Operating real estate	3,164,594	3,155,280
Construction in progress	93,001	91,047
Held for development	547	547
Total Real estate, at cost	3,258,142	3,246,874
Accumulated depreciation	(776,825)	(754,140)
Real estate, net	2,481,317	2,492,734
Cash and cash equivalents	380,434	137,333
Restricted cash	1,716	1,716
Accounts receivable, net	6,031	6,938
Deferred rent receivables, net	76,690	72,476
Other assets, net	103,158	106,112
Total assets	3,049,346	2,817,309
LIABILITIES AND EQUITY
Secured notes payable, net	110,934	110,923
Unsecured notes payable, net	1,536,890	1,196,677
Unsecured line of credit, net	0	99,151
Accounts payable and accrued expenses	71,226	59,262
Security deposits payable	6,629	6,590
Other liabilities and deferred credits, net	88,228	91,300
Total liabilities	1,813,907	1,563,903
Commitments and contingencies (Note 11)
American Assets Trust, Inc. stockholders’ equity
Accumulated other comprehensive income	3,016	2,737
CAPITAL:
Limited partners' capital, 16,181,537 and 16,181,537 units issued and outstanding as of March 31, 2021 and December 31, 2020, respectively	(23,212)	(19,020)
General partner's capital, 60,472,286 and 60,476,292 units issued and outstanding as of March 31, 2021 and December 31, 2020, respectively	1,255,635	1,269,689
Total capital	1,235,439	1,253,406
TOTAL LIABILITIES AND EQUITY	$ 3,049,346	$ 2,817,309