CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOW FROM OPERATING ACTIVITIES
Net loss	$ (38,985)	$ (152,964)	$ (90,603)
Adjustments to reconcile net loss to net cash used in operating activities:
Equity in loss of unconsolidated entities	9,226	4,712	17,994
Distributions from unconsolidated entities	1,623	213	877
Gain on sale of interest in unconsolidated entities		(1,758)
Gain on sale of real estate	(221,681)	(88,555)	(71,104)
Impairment of real estate assets	95,826	64,108	0
Share-based compensation	1,856	(3,035)	6,845
Depreciation and amortization	51,199	95,997	104,581
Amortization of deferred financing costs	422	421	434
Amortization of above and below market leases, net	176	(1,793)	(495)
Straight-line rent adjustment	(2,269)	4,983	(15,590)
Interest on sale-leaseback financing obligations	202
Change in operating assets and liabilities
Tenants and other receivables	5,771	9,725	2,556
Prepaid expenses, deferred expenses and other assets	(3,588)	(179)	(5,149)
Accounts payable, accrued expenses and other liabilities	(35,774)	20,811	(8,006)
Net cash used in operating activities	(135,996)	(47,314)	(57,660)
CASH FLOW FROM INVESTING ACTIVITIES
Investment in unconsolidated entities	(38,644)	(62,891)	(54,193)
Net proceeds from disposition of interest in unconsolidated entities		19,551
Distributions from unconsolidated entities	12,584	1,150	1,884
Net proceeds from sale of real estate	392,422	331,878	140,505
Development of real estate	(105,655)	(246,820)	(387,686)
Net cash provided by (used in) investing activities	260,707	42,868	(299,490)
CASH FLOW FROM FINANCING ACTIVITIES
Repayment of Term Loan Facility	(160,000)
Proceeds from sale-leaseback financing obligations		20,425
Purchase of shares related to stock grant recipients' tax withholdings	(269)	(85)	(3,523)
Preferred dividends paid	(4,900)	(4,900)	(4,900)
Common dividends paid			(17,964)
Non-controlling interests distributions paid			(10,060)
Contributions from noncontrolling interests in other partnerships	3,957
Net cash (used in) provided by financing activities	(161,212)	15,440	(36,447)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(36,501)	10,994	(393,597)
Cash, cash equivalents, and restricted cash, beginning of period	150,254	139,260	532,857
Cash, cash equivalents, and restricted cash, end of period	113,753	150,254	139,260
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	143,728	139,260	532,857
Restricted cash at beginning of period	6,526
Cash and cash equivalents at the end of period	106,602	143,728	139,260
Restricted cash at the end of period	7,151	6,526
Cash and cash equivalents and restricted cash	113,753	150,254	139,260
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	115,359	117,866	117,556
Capitalized interest	12,464	27,130	28,497
Income taxes paid	197	293	285
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Development of real estate financed with accounts payable	27,198	20,586	17,006
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)	(17,237)
Tenants and other receivables, net		(610)	(2)
Lease intangible assets, net		(567)	(26)
Prepaid expenses, deferred expenses and other assets, net	(761)	(528)	(84)
Accounts payable, accrued expenses and other liabilities		547	6
Transfer to real estate assets held for sale	(1,864)	(3,411)	(5,275)
Transfer of below market asset to right of use asset			(11,005)
Recording (removal) of right of use assets	(983)	1,598	19,373
Recording (removal) of lease liabilities	$ 983	(1,598)	(8,368)
Property delivered in exchange			(2,075)
Property received in exchange			$ 11,326
Property received in JV distribution		19,300
Non-cash property investment in JV distribution		$ (19,300)