Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
OPERATING ACTIVITIES
Net income	$ 45,637	$ 53,915	$ 31,145
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(2,637)	(5,587)	(4,623)
Depreciation and amortization	71,319	63,392	66,568
Amortization of debt issuance costs and debt fair value adjustments	4,473	4,214	4,075
Gain on sale of real estate	0	(7,121)	0
Stock-based compensation expense	2,414	2,877	3,666
Settlement of forward interest rate swap agreement	0	0	1,617
Other noncash interest expense	(231)	(231)	(39)
Other, net	(769)	878	(95)
Changes in operating assets and liabilities
Change in restricted cash	1,982	265	1,198
Change in accounts receivable	(2,347)	(1,011)	279
Change in other assets	(982)	(243)	(107)
Change in accounts payable and accrued expenses	1,371	(1,081)	1,381
Change in security deposits payable	158	493	358
Change in other liabilities and deferred credits	2,275	(36)	188
Net cash provided by operating activities	122,663	110,724	105,611
INVESTING ACTIVITIES
Capital expenditures	(59,633)	(134,174)	(144,674)
Proceeds from sale of real estate, net of selling costs	0	12,259	0
Change in restricted cash, reserves for capital improvements	(309)	(893)	(3,068)
Leasing commissions	(3,572)	(4,461)	(5,098)
Net cash used in investing activities	(63,514)	(127,269)	(152,840)
FINANCING ACTIVITIES
Repayment of secured notes payable	(136,974)	(235,980)	(142,276)
Proceeds from unsecured term loan	150,000	0	100,000
Proceeds from unsecured line of credit	34,000	65,000	0
Repayment of unsecured line of credit	44,000	35,000	93,000
Proceeds from issuance of unsecured notes payable	0	200,000	150,000
Debt issuance costs	(2,055)	(2,881)	(2,141)
Proceeds from issuance of common stock, net	9,640	72,782	104,107
Dividends and distributions	(64,077)	(59,412)	(54,311)
Shares withheld for employee taxes	(807)	(7,396)	(4,780)
Net cash provided by (used in) financing activities	(54,273)	(2,887)	57,599
Net (decrease) increase in cash and cash equivalents	4,876	(19,432)	10,370
Cash and cash equivalents, beginning of period	39,925	59,357	48,987
Cash and cash equivalents, end of period	44,801	39,925	59,357
American Assets Trust, L.P.
OPERATING ACTIVITIES
Net income	45,637	53,915	31,145
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(2,637)	(5,587)	(4,623)
Depreciation and amortization	71,319	63,392	66,568
Amortization of debt issuance costs and debt fair value adjustments	4,473	4,214	4,075
Gain on sale of real estate	0	(7,121)	0
Stock-based compensation expense	2,414	2,877	3,666
Settlement of forward interest rate swap agreement	0	0	1,617
Other noncash interest expense	(231)	(231)	(39)
Other, net	(769)	878	(95)
Changes in operating assets and liabilities
Change in restricted cash	1,982	265	1,198
Change in accounts receivable	(2,347)	(1,011)	279
Change in other assets	(982)	(243)	(107)
Change in accounts payable and accrued expenses	1,371	(1,081)	1,381
Change in security deposits payable	158	493	358
Change in other liabilities and deferred credits	2,275	(36)	188
Net cash provided by operating activities	122,663	110,724	105,611
INVESTING ACTIVITIES
Capital expenditures	(59,633)	(134,174)	(144,674)
Proceeds from sale of real estate, net of selling costs	0	12,259	0
Change in restricted cash, reserves for capital improvements	(309)	(893)	(3,068)
Leasing commissions	(3,572)	(4,461)	(5,098)
Net cash used in investing activities	(63,514)	(127,269)	(152,840)
FINANCING ACTIVITIES
Repayment of secured notes payable	(136,974)	(235,980)	(142,276)
Proceeds from unsecured term loan	150,000	0	100,000
Proceeds from unsecured line of credit	34,000	65,000	0
Repayment of unsecured line of credit	44,000	35,000	93,000
Proceeds from issuance of unsecured notes payable	0	200,000	150,000
Debt issuance costs	(2,055)	(2,881)	(2,141)
Contributions from American Assets Trust, Inc.	9,640	72,782	104,107
Dividends and distributions	(64,077)	(59,412)	(54,311)
Shares withheld for employee taxes	(807)	(7,396)	(4,780)
Net cash provided by (used in) financing activities	(54,273)	(2,887)	57,599
Net (decrease) increase in cash and cash equivalents	4,876	(19,432)	10,370
Cash and cash equivalents, beginning of period	39,925	59,357	48,987
Cash and cash equivalents, end of period	$ 44,801	$ 39,925	$ 59,357