Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES
Net income	$ 13,220	$ 25,310
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(8,938)	(13,191)
Depreciation and amortization	55,147	53,955
Amortization of debt issuance costs and debt discounts	1,156	742
Early extinguishment of debt	4,271	0
Provision for uncollectable rental income	776	3,849
Stock-based compensation expense	2,968	2,502
Other noncash interest expense	(550)	(665)
Other, net	(2,544)	(2,833)
Changes in operating assets and liabilities
Change in accounts receivable	70	(3,822)
Change in other assets	(4,419)	903
Change in accounts payable and accrued expenses	14,540	3,792
Change in security deposits payable	139	(631)
Change in other liabilities and deferred credits	890	(789)
Net cash provided by operating activities	76,726	69,122
INVESTING ACTIVITIES
Capital expenditures	(35,526)	(35,241)
Leasing commissions	(1,528)	(3,892)
Purchases of marketable securities	(47,760)	0
Proceeds from the sale of marketable securities	47,723	0
Net cash used in investing activities	(37,091)	(39,133)
FINANCING ACTIVITIES
Repayment of secured notes payable	0	(51,003)
Proceeds from unsecured line of credit	0	100,000
Repayment of unsecured line of credit	(100,000)	0
Proceeds from unsecured notes payable	494,675	0
Repayments of Unsecured Debt	(155,375)	0
Debt issuance costs	(5,075)	0
Proceeds from issuance of common stock, net	0	(119)
Dividends paid to common stock and unitholders	(42,927)	(38,230)
Net cash provided by financing activities	191,298	10,648
Net increase in cash and cash equivalents	230,933	40,637
Cash, cash equivalents and restricted cash, beginning of period	139,049	109,451
Cash, cash equivalents and restricted cash, end of period	369,982	150,088
Cash and cash equivalents	368,266	146,131
Restricted cash	1,716	3,957
American Assets Trust, L.P.
OPERATING ACTIVITIES
Net income	13,220	25,310
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(8,938)	(13,191)
Depreciation and amortization	55,147	53,955
Amortization of debt issuance costs and debt discounts	1,156	742
Early extinguishment of debt	4,271	0
Provision for uncollectable rental income	776	3,849
Stock-based compensation expense	2,968	2,502
Other noncash interest expense	(550)	(665)
Other, net	(2,544)	(2,833)
Changes in operating assets and liabilities
Change in accounts receivable	70	(3,822)
Change in other assets	(4,419)	903
Change in accounts payable and accrued expenses	14,540	3,792
Change in security deposits payable	139	(631)
Change in other liabilities and deferred credits	890	(789)
Net cash provided by operating activities	76,726	69,122
INVESTING ACTIVITIES
Capital expenditures	(35,526)	(35,241)
Leasing commissions	(1,528)	(3,892)
Purchases of marketable securities	(47,760)	0
Proceeds from the sale of marketable securities	47,723	0
Net cash used in investing activities	(37,091)	(39,133)
FINANCING ACTIVITIES
Repayment of secured notes payable	0	(51,003)
Proceeds from unsecured line of credit	0	100,000
Repayment of unsecured line of credit	(100,000)	0
Proceeds from unsecured notes payable	494,675	0
Repayments of Unsecured Debt	(155,375)	0
Debt issuance costs	(5,075)	0
Contributions from American Assets Trust, Inc.	0	(119)
Dividends paid to common stock and unitholders	(42,927)	(38,230)
Net cash provided by financing activities	191,298	10,648
Net increase in cash and cash equivalents	230,933	40,637
Cash, cash equivalents and restricted cash, beginning of period	139,049	109,451
Cash, cash equivalents and restricted cash, end of period	369,982	150,088
Cash and cash equivalents	368,266	146,131
Restricted cash	$ 1,716	$ 3,957