CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (135,867)	$ (266,706)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	111,270	117,791
Amortization	8,694	13,089
Straight-line rent adjustments	261	(1,988)
Amortization of deferred compensation	4,571	6,748
(Gain) loss on debt extinguishment, net	(4,587)	1,487
Gain on derecognition of property	0	(8,127)
Paid-in-kind interest	48,243	9,515
(Gain) loss on hedge ineffectiveness	(2,866)	2,912
Loss (gain) on sale of interests in real estate and non-operating real estate, net	1,170	(11,498)
Equity in loss of partnerships	3,732	5,544
Loss on remeasurement of assets by equity method investee	0	148,545
Gain on sale of real estate by equity method investee	(1,337)	0
Cash distributions from partnerships	4,828	1,778
Impairment of assets	9,938	0
Change in assets and liabilities:
Net change in other assets	17,632	(7,936)
Net change in other liabilities	3,296	(5,281)
Net cash provided by operating activities	68,978	5,873
Cash flows from investing activities:
Cash proceeds from sales of real estate	5,008	22,517
Investments in partnerships	(1,698)	(34,269)
Investments in real estate improvements	(16,453)	(37,753)
Additions to construction in progress	(8,238)	(22,779)
Capitalized leasing costs	(234)	(150)
Additions to leasehold improvements and corporate fixed assets	(93)	(4,914)
Net cash used in investing activities	(21,708)	(77,348)
Cash flows from financing activities:
Repayments to 2014 and 2018 term loans and Bridge Facility	0	(605,396)
Borrowings under Bridge Facility and First and Second Lien Term Loans	0	968,000
Repayments under First Lien Term Loan	(4,684)	0
Repayments of finance lease liabilities	(689)	(655)
Proceeds from notes payable	0	4,536
Repayments of mortgage loans	(135,155)	0
Proceeds from mortgage loans	127,685	0
Principal installments on mortgage loans	(25,527)	(16,076)
Payment of deferred financing costs	(1,125)	(14,072)
Payment of debt extinguishment costs	0	(922)
Value of shares of beneficial interest issued	0	572
Dividends paid to common shareholders	0	(18,081)
Dividends paid to preferred shareholders	0	(13,688)
Distributions paid to Operating Partnership unit holders and noncontrolling interest	0	(504)
Value of shares retired under equity incentive plans, net of shares issued	(648)	(466)
Net cash provided by (used in) financing activities	(40,424)	103,078
Net change in cash, cash equivalents, and restricted cash	6,846	31,603
Cash, cash equivalents, and restricted cash, beginning of period	51,231	19,628
Cash, cash equivalents, and restricted cash, end of period	58,077	51,231
Restructured Revolver
Cash flows from financing activities:
Net (repayments) borrowings under the Restructured Revolver facility	0	(255,000)
First Lien Revolving Facility
Cash flows from financing activities:
Net (repayments) borrowings under the Restructured Revolver facility	$ (281)	$ 54,830