CONSOLIDATED STATEMENTS OF BENEFICIARIES’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Rabbi Trust/Deferred Compensation Shares	Additional Paid-in Capital	Common Shares in Grantor Trust	Cumulative Earnings	Accumulated Other Comprehensive Income (Loss)	Cumulative Distributions	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2022		171,569,807	1,179,643
Beginning balance at Dec. 31, 2022	$ 1,633,334	$ 1,716	$ 19,601	$ 3,153,229	$ (19,601)	$ 1,176,195	$ 3,897	$ (2,709,405)	$ 7,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(5,276)					(5,259)			(17)
Other comprehensive income (loss)	(5,291)						(5,307)		16
Share-based compensation activity (in shares)		171,318	22,449
Share-based compensation activity	3,371	$ 1		3,370
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(13,422)	(48,733)
Share Issuance from/(to) Deferred Compensation Plan	(88)		$ 145	(88)	(145)
Reallocation of Noncontrolling interest	0			(4)					4
Distributions declared	(32,832)							(32,734)	(98)
Ending balance (in shares) at Mar. 31, 2023		171,727,703	1,153,359
Ending balance at Mar. 31, 2023	1,593,218	$ 1,717	$ 19,746	3,156,507	(19,746)	1,170,936	(1,410)	(2,742,139)	7,607
Beginning balance (in shares) at Dec. 31, 2022		171,569,807	1,179,643
Beginning balance at Dec. 31, 2022	1,633,334	$ 1,716	$ 19,601	3,153,229	(19,601)	1,176,195	3,897	(2,709,405)	7,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(18,013)
Other comprehensive income (loss)	1,355
Ending balance (in shares) at Jun. 30, 2023		172,101,929	1,207,415
Ending balance at Jun. 30, 2023	1,556,660	$ 1,719	$ 19,965	3,159,276	(19,965)	1,158,240	5,216	(2,775,124)	7,333
Beginning balance (in shares) at Mar. 31, 2023		171,727,703	1,153,359
Beginning balance at Mar. 31, 2023	1,593,218	$ 1,717	$ 19,746	3,156,507	(19,746)	1,170,936	(1,410)	(2,742,139)	7,607
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(12,737)					(12,696)			(41)
Other comprehensive income (loss)	6,646						6,626		20
Share-based compensation activity (in shares)		374,226	54,056
Share-based compensation activity	2,616	$ 2		2,614
Share Issuance from/(to) Deferred Compensation Plan	0		$ 219		(219)
Reallocation of Noncontrolling interest	0			155					(155)
Distributions declared	(33,083)							(32,985)	(98)
Ending balance (in shares) at Jun. 30, 2023		172,101,929	1,207,415
Ending balance at Jun. 30, 2023	$ 1,556,660	$ 1,719	$ 19,965	3,159,276	(19,965)	1,158,240	5,216	(2,775,124)	7,333
Beginning balance (in shares) at Dec. 31, 2023	172,097,661	172,097,661	1,194,127
Beginning balance at Dec. 31, 2023	$ 1,324,157	$ 1,719	$ 19,965	3,163,949	(19,965)	979,406	(668)	(2,827,022)	6,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(16,414)					(16,368)			(46)
Other comprehensive income (loss)	6,026						6,007		19
Share-based compensation activity (in shares)		194,480	7,148
Share-based compensation activity	4,831	$ 2		4,829
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(21,234)	(56,154)
Share Issuance from/(to) Deferred Compensation Plan	(100)		$ 31	(100)	(31)
Reallocation of Noncontrolling interest	0			(17)					17
Distributions declared	(26,254)							(26,177)	(77)
Ending balance (in shares) at Mar. 31, 2024		172,270,907	1,145,121
Ending balance at Mar. 31, 2024	$ 1,292,246	$ 1,721	$ 19,996	3,168,661	(19,996)	963,038	5,339	(2,853,199)	6,686
Beginning balance (in shares) at Dec. 31, 2023	172,097,661	172,097,661	1,194,127
Beginning balance at Dec. 31, 2023	$ 1,324,157	$ 1,719	$ 19,965	3,163,949	(19,965)	979,406	(668)	(2,827,022)	6,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	13,853
Other comprehensive income (loss)	$ 6,807
Ending balance (in shares) at Jun. 30, 2024	172,678,090	172,678,090	1,252,467
Ending balance at Jun. 30, 2024	$ 1,299,397	$ 1,724	$ 20,456	3,171,011	(20,456)	993,211	6,117	(2,879,378)	6,712
Beginning balance (in shares) at Mar. 31, 2024		172,270,907	1,145,121
Beginning balance at Mar. 31, 2024	1,292,246	$ 1,721	$ 19,996	3,168,661	(19,996)	963,038	5,339	(2,853,199)	6,686
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	30,267					30,173			94
Other comprehensive income (loss)	781						778		3
Repurchase and retirement of Common Shares of Beneficial Interest	0
Share-based compensation activity (in shares)		407,226	107,389
Share-based compensation activity	2,359	$ 3		2,356
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(43)	(43)
Share Issuance from/(to) Deferred Compensation Plan	0		$ 460		(460)
Reallocation of Noncontrolling interest	0			(6)					6
Distributions declared	$ (26,256)							(26,179)	(77)
Ending balance (in shares) at Jun. 30, 2024	172,678,090	172,678,090	1,252,467
Ending balance at Jun. 30, 2024	$ 1,299,397	$ 1,724	$ 20,456	$ 3,171,011	$ (20,456)	$ 993,211	$ 6,117	$ (2,879,378)	$ 6,712