CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOW FROM OPERATING ACTIVITIES
Net loss	$ (120,097)	$ (38,985)	$ (152,964)
Adjustments to reconcile net loss to net cash used in operating activities:
Equity in loss of unconsolidated entities	72,080	9,226	4,712
Distributions from unconsolidated entities		1,623	213
Loss (gain) on sale of interest in unconsolidated entities	677		(1,758)
Gain on sale of real estate	(211,936)	(221,681)	(88,555)
Impairment of real estate assets	126,887	95,826	64,108
Share-based compensation	2,767	1,856	(3,035)
Depreciation and amortization	41,114	51,199	95,997
Amortization of deferred financing costs	422	422	421
Amortization of above and below market leases, net	223	176	(1,793)
Straight-line rent adjustment	(1,271)	(2,269)	4,983
Interest on sale-leaseback financing obligations	447	202
Change in operating assets and liabilities
Tenants and other receivables	(10,823)	5,771	9,725
Prepaid expenses, deferred expenses and other assets	2,839	(3,588)	(179)
Accounts payable, accrued expenses and other liabilities	(21,252)	(35,774)	20,811
Net cash used in operating activities	(117,923)	(135,996)	(47,314)
CASH FLOW FROM INVESTING ACTIVITIES
Investment in unconsolidated entities	(25,519)	(38,644)	(62,891)
Net proceeds from disposition of interest in unconsolidated entities	55,670		19,551
Distributions from unconsolidated entities	11,928	12,584	1,150
Net proceeds from sale of real estate	643,294	392,422	331,878
Development of real estate	(99,294)	(105,655)	(246,820)
Net cash provided by investing activities	586,079	260,707	42,868
CASH FLOW FROM FINANCING ACTIVITIES
Repayment of Term Loan Facility	(410,000)	(160,000)
Repayment of sales-leaseback financing obligations	(22,070)
Proceeds from sale-leaseback financing obligations			20,425
Purchase of shares related to stock grant recipients' tax withholdings		(269)	(85)
Preferred dividends paid	(4,900)	(4,900)	(4,900)
Contributions from noncontrolling interests in other partnerships		3,957
Net cash (used in) provided by financing activities	(436,970)	(161,212)	15,440
Net increase (decrease) in cash, cash equivalents, and restricted cash	31,186	(36,501)	10,994
Cash, cash equivalents, and restricted cash, beginning of period	113,753	150,254	139,260
Cash, cash equivalents, and restricted cash, end of period	144,939	113,753	150,254
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	106,602	143,728	139,260
Restricted cash at beginning of period	7,151	6,526
Cash and cash equivalents at end of period	133,480	106,602	143,728
Restricted cash at end of period	11,459	7,151	6,526
Cash and cash equivalents and restricted cash	144,939	113,753	150,254
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	98,955	115,359	117,866
Capitalized interest	13,918	12,464	27,130
Income taxes paid	466	197	293
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Development of real estate financed with accounts payable	37,983	27,198	20,586
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)	(26,977)
Tenants and other receivables, net			(610)
Lease intangible assets, net			(567)
Prepaid expenses, deferred expenses and other assets, net		(761)	(528)
Accounts payable, accrued expenses and other liabilities			547
Transfer to real estate assets held for sale	$ 455,617	(1,864)	(3,411)
Recording (removal) of right of use assets		(983)	1,598
Recording (removal) of lease liabilities		$ 983	(1,598)
Property received in JV distribution			19,300
Non-cash property investment in JV distribution			$ (19,300)