Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES
Net income	$ 17,993	$ 30,401
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	153	(2,233)
Depreciation and amortization	86,033	63,360
Amortization of debt issuance costs and debt fair value adjustments	1,165	2,625
Stock-based compensation expense	2,180	1,917
Settlement of derivative instruments	0	10,667
Other noncash interest expense	(959)	(794)
Other, net	4	1,665
Changes in operating assets and liabilities
Change in accounts receivable	1,001	211
Change in other assets	(12)	(547)
Change in accounts payable and accrued expenses	8,292	17,299
Change in security deposits payable	2,178	622
Change in other liabilities and deferred credits	885	462
Net cash provided by operating activities	118,913	125,655
INVESTING ACTIVITIES
Acquisition of real estate	0	(278,141)
Capital expenditures	(31,666)	(34,757)
Leasing commissions	(5,127)	(3,742)
Net cash used in investing activities	(36,793)	(316,640)
FINANCING ACTIVITIES
Repayment of secured notes payable	(74,843)	(166,781)
Proceeds from unsecured line of credit	35,000	173,000
Repayment of unsecured line of credit	(13,000)	(193,000)
Proceeds from unsecured notes payable	0	450,000
Debt issuance costs	(2,687)	(2,557)
Proceeds from issuance of common stock, net	(236)
Proceeds from issuance of common stock, net		30,075
Dividends paid to common stock and unitholders	(52,164)	(50,172)
Shares withheld for employee taxes	(6)	0
Net cash (used in) provided by financing activities	(107,936)	240,565
Net (decrease) increase in cash and cash equivalents	(25,816)	49,580
Cash, cash equivalents, and restricted cash equivalents, beginning of period	91,954	54,751
Cash, cash equivalents, and restricted cash equivalents, end of period	66,138	104,331
Cash and cash equivalents	56,220	94,207
Restricted cash	9,918	10,124
American Assets Trust, L.P.
OPERATING ACTIVITIES
Net income	17,993	30,401
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	153	(2,233)
Depreciation and amortization	86,033	63,360
Amortization of debt issuance costs and debt fair value adjustments	1,165	2,625
Stock-based compensation expense	2,180	1,917
Settlement of derivative instruments	0	10,667
Other noncash interest expense	(959)	(794)
Other, net	4	1,665
Changes in operating assets and liabilities
Change in accounts receivable	1,001	211
Change in other assets	(12)	(547)
Change in accounts payable and accrued expenses	8,292	17,299
Change in security deposits payable	2,178	622
Change in other liabilities and deferred credits	885	462
Net cash provided by operating activities	118,913	125,655
INVESTING ACTIVITIES
Acquisition of real estate	0	(278,141)
Capital expenditures	(31,666)	(34,757)
Leasing commissions	(5,127)	(3,742)
Net cash used in investing activities	(36,793)	(316,640)
FINANCING ACTIVITIES
Repayment of secured notes payable	(74,843)	(166,781)
Proceeds from unsecured line of credit	35,000	173,000
Repayment of unsecured line of credit	(13,000)	(193,000)
Proceeds from unsecured notes payable	0	450,000
Debt issuance costs	(2,687)	(2,557)
Proceeds from issuance of common stock, net	(236)
Contributions from American Assets Trust, Inc.		30,075
Dividends paid to common stock and unitholders	(52,164)	(50,172)
Shares withheld for employee taxes	(6)	0
Net cash (used in) provided by financing activities	(107,936)	240,565
Net (decrease) increase in cash and cash equivalents	(25,816)	49,580
Cash, cash equivalents, and restricted cash equivalents, beginning of period	91,954	54,751
Cash, cash equivalents, and restricted cash equivalents, end of period	66,138	104,331
Cash and cash equivalents	56,220	94,207
Restricted cash	$ 9,918	$ 10,124