Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net income	$ 43,703	$ 17,993
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(3,652)	153
Depreciation and amortization	69,733	86,033
Amortization of debt issuance costs and debt fair value adjustments	1,096	1,165
Gain on sale of real estate	633	0
Stock-based compensation expense	3,359	2,180
Settlement of Forward Interest Rate Swap Agreement	513	0
Lease termination income	(4,518)	0
Other noncash interest expense	(972)	(959)
Other, net	1,728	4
Changes in operating assets and liabilities
Change in accounts receivable	732	1,001
Change in other assets	(22)	(12)
Change in accounts payable and accrued expenses	16,461	8,292
Change in security deposits payable	(1,433)	2,178
Change in other liabilities and deferred credits	(3,983)	885
Net cash provided by operating activities	122,112	118,913
INVESTING ACTIVITIES
Acquisition of real estate	(507,780)	0
Capital expenditures	(65,549)	(31,666)
Proceeds from sale of real estate, net of selling costs	8,191	0
Leasing commissions	(8,892)	(5,127)
Net cash used in investing activities	(574,030)	(36,793)
FINANCING ACTIVITIES
Repayment of secured notes payable	(20,468)	(74,843)
Proceeds from unsecured line of credit	59,000	35,000
Repayment of unsecured line of credit	(123,000)	(13,000)
Proceeds from unsecured notes payable	150,000	0
Debt issuance costs	(1,091)	(2,687)
Proceeds from issuance of common stock, net	513,934	(236)
Dividends paid to common stock and unitholders	(57,667)	(52,164)
Shares withheld for employee taxes	0	6
Net cash provided by (used in) financing activities	520,708	(107,936)
Net increase (decrease) in cash and cash equivalents	68,790	(25,816)
Cash, cash equivalents and restricted cash, beginning of period	57,272	91,954
Cash, cash equivalents and restricted cash, end of period	126,062	66,138
Cash and cash equivalents	115,568	56,220
Restricted cash	10,494	9,918
American Assets Trust, L.P.
OPERATING ACTIVITIES
Net income	43,703	17,993
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(3,652)	153
Depreciation and amortization	69,733	86,033
Amortization of debt issuance costs and debt fair value adjustments	1,096	1,165
Gain on sale of real estate	633	0
Stock-based compensation expense	3,359	2,180
Settlement of Forward Interest Rate Swap Agreement	513	0
Lease termination income	(4,518)	0
Other noncash interest expense	(972)	(959)
Other, net	1,728	4
Changes in operating assets and liabilities
Change in accounts receivable	732	1,001
Change in other assets	(22)	(12)
Change in accounts payable and accrued expenses	16,461	8,292
Change in security deposits payable	(1,433)	2,178
Change in other liabilities and deferred credits	(3,983)	885
Net cash provided by operating activities	122,112	118,913
INVESTING ACTIVITIES
Acquisition of real estate	(507,780)	0
Capital expenditures	(65,549)	(31,666)
Proceeds from sale of real estate, net of selling costs	8,191	0
Leasing commissions	(8,892)	(5,127)
Net cash used in investing activities	(574,030)	(36,793)
FINANCING ACTIVITIES
Repayment of secured notes payable	(20,468)	(74,843)
Proceeds from unsecured line of credit	59,000	35,000
Repayment of unsecured line of credit	(123,000)	(13,000)
Proceeds from unsecured notes payable	150,000	0
Debt issuance costs	(1,091)	(2,687)
Contributions from American Assets Trust, Inc.	513,934	(236)
Dividends paid to common stock and unitholders	(57,667)	(52,164)
Shares withheld for employee taxes	0	6
Net cash provided by (used in) financing activities	520,708	(107,936)
Net increase (decrease) in cash and cash equivalents	68,790	(25,816)
Cash, cash equivalents and restricted cash, beginning of period	57,272	91,954
Cash, cash equivalents and restricted cash, end of period	126,062	66,138
Cash and cash equivalents	115,568	56,220
Restricted cash	$ 10,494	$ 9,918