CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOW FROM OPERATING ACTIVITIES
Net loss	$ (154,911)	$ (120,097)	$ (38,985)
Adjustments to reconcile net loss to net cash used in operating activities:
Equity in loss of unconsolidated entities	55,857	72,080	9,226
Distributions from unconsolidated entities			1,623
(Gain) loss on sale of interest in unconsolidated entities	(6,407)	677
Gain on sale of real estate, net	(96,214)	(211,936)	(221,681)
Impairment of real estate assets	107,043	126,887	95,826
Share-based compensation	2,735	2,767	1,856
Depreciation and amortization	14,471	41,114	51,199
Amortization of deferred financing costs	246	422	422
Amortization of above and below market leases, net	176	223	176
Straight-line rent adjustment	16,872	(1,271)	(2,269)
Interest on sale-leaseback financing obligations		447	202
Change in operating assets and liabilities
Tenants and other receivables	12,544	(10,823)	5,771
Prepaid expenses, deferred expenses and other assets	5,948	2,839	(3,588)
Accounts payable, accrued expenses and other liabilities	(11,421)	(21,252)	(35,774)
Net cash used in operating activities	(53,061)	(117,923)	(135,996)
CASH FLOW FROM INVESTING ACTIVITIES
Investment in unconsolidated entities	(13,370)	(25,519)	(38,644)
Distributions from unconsolidated entities	152,553	67,598	12,584
Net proceeds from sale of real estate	673,473	643,294	392,422
Development of real estate	(79,745)	(99,294)	(105,655)
Net cash provided by investing activities	732,911	586,079	260,707
CASH FLOW FROM FINANCING ACTIVITIES
Repayment of term loan	(670,000)	(410,000)	(160,000)
Repayment of sales-leaseback financing obligations		(22,070)
Purchase of shares related to stock grant recipients' tax withholdings	(315)		(269)
Preferred dividends paid	(4,900)	(4,900)	(4,900)
Contributions from noncontrolling interests in to consolidated VIEs	126		3,957
Net cash used in financing activities	(675,089)	(436,970)	(161,212)
Net increase and (decrease) in cash and cash equivalents	4,761	31,186	(36,501)
Cash and cash equivalents, and restricted cash, beginning of period	144,939	113,753	150,254
Cash and cash equivalents, and restricted cash, end of period	149,700	144,939	113,753
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	133,480	106,602	143,728
Restricted cash at beginning of period	11,459	7,151	6,526
Cash and cash equivalents at end of period	134,001	133,480	106,602
Restricted cash at end of period	15,699	11,459	7,151
Cash and cash equivalents and restricted cash	149,700	144,939	113,753
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	46,046	98,955	115,359
Capitalized interest	3,742	13,918	12,464
Income taxes paid	38	466	197
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Development of real estate financed with accounts payable	19,575	37,983	27,198
Preferred dividends declared and unpaid	1,225	1,225	1,225
Decrease in real estate, net resulting from deconsolidated properties
Real estate, net			(6,650)
Prepaid expenses, deferred expenses and other assets, net			(761)
Transfer to / (from) real estate assets held for sale	$ (416,285)	$ 455,617	(1,864)
Recording (removal) of right of use assets			(983)
Recording (removal) of lease liabilities			$ 983