Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
REVENUE:
Rental income		$ 81,130	$ 92,070
Other property income		2,856	4,673
Total revenue		83,986	96,743
EXPENSES:
Rental expenses		18,246	22,568
Real estate taxes		11,354	11,045
General and administrative		6,823	6,820
Depreciation and amortization		27,501	27,462
Total operating expenses		63,924	67,895
OPERATING INCOME		20,062	28,848
Interest expense		(14,005)	(13,472)
Early extinguishment of debt		(4,271)	0
Other (expense) income, net		(53)	108
NET INCOME		1,733	15,484
Net income attributable to restricted shares		(137)	(104)
Net income attributable to unitholders in the Operating Partnership		(339)	(3,312)
NET INCOME ATTRIBUTABLE TO AMERICAN ASSETS TRUST, INC. STOCKHOLDERS		$ 1,257	$ 12,068
EARNINGS PER COMMON SHARE
Earnings per common share, basic (in USD per share)		$ 0.02	$ 0.20
Weighted average shares of common stock outstanding-basic (in shares)		59,984,335	59,723,072
EARNINGS PER COMMON SHARE, DILUTED
Earnings per common share, diluted (in USD per share)		$ 0.02	$ 0.20
Weighted average shares of common stock outstanding-diluted (in shares)		76,165,872	76,113,620
Dividends declared per common share (in USD per share)		$ 0.28	$ 0.30
COMPREHENSIVE INCOME
Net income		$ 1,733	$ 15,484
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(275)	(333)
Comprehensive income		2,012	9,036
Comprehensive income attributable to non-controlling interests		(407)	(1,941)
Comprehensive income attributable to American Assets Trust, Inc.		1,605	7,095
Interest Expense
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(275)	(333)
Senior Guaranteed Notes, Series A
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(193)
Senior Guaranteed Notes, Series A | Early Extinguishment of Debt
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(193)	0
American Assets Trust, L.P.
REVENUE:
Rental income		81,130	92,070
Other property income		2,856	4,673
Total revenue		83,986	96,743
EXPENSES:
Rental expenses		18,246	22,568
Real estate taxes		11,354	11,045
General and administrative		6,823	6,820
Depreciation and amortization		27,501	27,462
Total operating expenses		63,924	67,895
OPERATING INCOME		20,062	28,848
Interest expense		(14,005)	(13,472)
Early extinguishment of debt		(4,271)	0
Other (expense) income, net		(53)	108
NET INCOME		1,733	15,484
Net income attributable to restricted shares		(137)	(104)
NET INCOME ATTRIBUTABLE TO AMERICAN ASSETS TRUST, INC. STOCKHOLDERS		$ 1,596	$ 15,380
EARNINGS PER COMMON SHARE
Earnings per common share, basic (in USD per share)		$ 0.02	$ 0.20
Weighted average shares of common stock outstanding-basic (in shares)		76,165,872	76,113,620
EARNINGS PER COMMON SHARE, DILUTED
Earnings per common share, diluted (in USD per share)		$ 0.02	$ 0.20
Weighted average shares of common stock outstanding-diluted (in shares)		76,165,872	76,113,620
Distributions per unit (in USD per share)		$ 0.28	$ 0.30
COMPREHENSIVE INCOME
Net income		$ 1,733	$ 15,484
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(275)	(333)
Comprehensive income		2,012	9,036
American Assets Trust, L.P. | Interest Expense
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(275)	(333)
American Assets Trust, L.P. | Senior Guaranteed Notes, Series A
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(193)
American Assets Trust, L.P. | Senior Guaranteed Notes, Series A | Early Extinguishment of Debt
COMPREHENSIVE INCOME
Reclassification of amortization of forward-starting swap realized gains included in interest expense		(193)	0
Limited Partner | American Assets Trust, L.P.
EXPENSES:
NET INCOME	[1]	339	3,312
COMPREHENSIVE INCOME
Net income	[1]	339	3,312
Comprehensive income attributable to American Assets Trust, Inc.		(407)	(1,941)
General Partner | American Assets Trust, L.P.
EXPENSES:
NET INCOME	[2]	1,394	12,172
COMPREHENSIVE INCOME
Net income	[2]	1,394	12,172
Comprehensive income attributable to American Assets Trust, Inc.		1,605	7,095
Interest Rate Swap
COMPREHENSIVE INCOME
Other comprehensive gain - change in value of interest rate swaps		747	(6,115)
Interest Rate Swap | American Assets Trust, L.P.
COMPREHENSIVE INCOME
Other comprehensive gain - change in value of interest rate swaps		$ 747	$ (6,115)

[1] Consists of limited partnership interests held by third parties.

[2] Consists of general partnership interests held by American Assets Trust, Inc.