CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands		Total		Total Stockholders' Equity	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Balance at the beginning of the period (in shares) at Dec. 31, 2020					56,042,814				(1,070,558)
Balance at the beginning of the period at Dec. 31, 2020		$ 3,715,023		$ 3,714,603	$ 562	$ 3,947,278	$ (72,556)	$ (38,590)	$ (122,091)	$ 420
Increase (Decrease) in Stockholders' Equity
Net income (loss) excluding a loss attributable to redeemable noncontrolling interest	[1]	(66,589)		(66,594)			(66,594)			5
Interest rate swaps		6,356	[2]	6,356				6,356
Share of investee's other comprehensive income		1,217	[3]	1,217				1,217
Issuance of common shares		(5)		(5)		(5)
Stock plan activity (in shares)					135,419
Stock plan activity		5,265		5,265	$ 1	5,264
Balance at the end of the period (in shares) at Mar. 31, 2021					56,178,233				(1,070,558)
Balance at the end of the period at Mar. 31, 2021		3,661,267		3,660,842	$ 563	3,952,537	(139,150)	(31,017)	$ (122,091)	425
Increase (Decrease) in Stockholders' Equity
Share of investee's other comprehensive income, tax expense		346
Balance at the beginning of the period (in shares) at Dec. 31, 2021					56,173,276				(2,107,615)
Balance at the beginning of the period at Dec. 31, 2021		3,710,670		3,709,995	$ 563	3,960,418	(16,456)	(14,457)	$ (220,073)	675
Increase (Decrease) in Stockholders' Equity
Net income (loss) excluding a loss attributable to redeemable noncontrolling interest		2,171		2,122			2,122			49
Interest rate swaps		15,077	[2]	15,077				15,077
Deconsolidation of Associations of Unit Owners		(210)								(210)
Reclassification of the Company’s share of previously deferred derivative gains, net of tax expense of $1,912	[4]	(6,723)		(6,723)				(6,723)
Repurchase of common shares (in shares)									(1,750,668)
Repurchase of common shares		(170,670)		(170,670)					$ (170,670)
Stock plan activity (in shares)					127,048				(9,932)
Stock plan activity		3,083		3,083	$ 1	3,994			$ (912)
Balance at the end of the period (in shares) at Mar. 31, 2022					56,300,324				(3,868,215)
Balance at the end of the period at Mar. 31, 2022		3,553,398		$ 3,552,884	$ 564	$ 3,964,412	$ (14,334)	$ (6,103)	$ (391,655)	$ 514
Increase (Decrease) in Stockholders' Equity
Share of investee's other comprehensive income, tax expense	[4]	$ 1,912

[1] Excludes redeemable noncontrolling interest. See Note 2 - Investment in Real Estate and Other Affiliates.

[2] Amounts are shown net of tax expense of $4.5 million for the three months ended March 31, 2022, and $1.8 million for the three months ended March 31, 2021.

[3] Amount is shown net of tax expense of $0.3 million for the three months ended March 31, 2021.

[4] In March 2022, the Company completed the sale of its ownership interest in 110 North Wacker and released a net of $6.7 million from Accumulated other comprehensive income (loss), representing the Company’s $8.6 million share of previously deferred gains associated with the Venture’s derivative instruments net of tax expense of $1.9 million. See Note 2 - Investment in Real Estate and Other Affiliates for additional information.