CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows from Operating Activities:
Net loss	$ 8,314,000	$ 6,122,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,888,000	55,624,000
Straight-lining of rental revenue	(7,756,000)	1,789,000
Amortization of stock-based compensation expense	5,117,000	6,562,000
Amortization of deferred financing costs	1,538,000	1,538,000
Loss from unconsolidated joint ventures	5,762,000	5,113,000
Distributions of earnings from unconsolidated joint ventures	144,000	18,000
Unrealized loss on real estate related fund investments	1,111,000
Loss (income) from unconsolidated real estate related funds	178,000	(170,000)
Distributions of earnings from unconsolidated real estate related funds	51,000	150,000
Amortization of above and below-market leases, net	(1,036,000)	(358,000)
Other non-cash adjustments	(42,000)	302,000
Changes in operating assets and liabilities:
Real estate related fund investments	(3,918,000)
Accounts and other receivables	4,457,000	3,904,000
Deferred charges	(1,689,000)	(1,086,000)
Other assets	(8,469,000)	(17,688,000)
Accounts payable and accrued expenses	(3,797,000)	(3,162,000)
Other liabilities	(885,000)	16,000
Net cash provided by operating activities	57,968,000	58,674,000
Cash Flows from Investing Activities:
Additions to real estate	(18,883,000)	(29,025,000)
Due from affiliates		(49,316,000)
Investments in an unconsolidated joint venture		(9,684,000)
Contributions of capital to unconsolidated real estate related funds	0	(133,000)
Net cash used in investing activities	(18,883,000)	(88,158,000)
Cash Flows from Financing Activities:
Contributions from noncontrolling interests in consolidated real estate related funds	49,748,000
Distributions to noncontrolling interests in consolidated real estate related funds	(3,740,000)
Dividends paid to common stockholders	(16,827,000)	(15,329,000)
Distributions paid to common unitholders	(1,199,000)	(1,566,000)
Distributions to noncontrolling interests in consolidated joint ventures	(4,140,000)	(14,681,000)
Contributions from noncontrolling interests in consolidated joint ventures	283,000
Settlement of accounts payable in connection with repurchases of common shares	(1,847,000)
Repurchase of shares related to stock compensation agreements and related tax withholdings	(205,000)	(280,000)
Net cash provided by (used in) financing activities	22,073,000	(31,856,000)
Net increase (decrease) in cash and cash equivalents and restricted cash	61,158,000	(61,340,000)
Cash and cash equivalents and restricted cash at beginning of period	449,817,000	529,666,000
Cash and cash equivalents and restricted cash at end of period	510,975,000	468,326,000
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	408,905,000	524,900,000
Restricted cash at beginning of period	40,912,000	4,766,000
Cash and cash equivalents and restricted cash at beginning of period	449,817,000	529,666,000
Cash and cash equivalents at end of period	451,796,000	461,995,000
Restricted cash at end of period	59,179,000	6,331,000
Cash and cash equivalents and restricted cash at end of period	510,975,000	468,326,000
Supplemental Disclosure of Cash Flow Information:
Cash payments for interest	33,338,000	33,190,000
Cash payments for income taxes, net of refunds	317,000	1,193,000
Non-Cash Transactions:
Common shares issued upon redemption of common units	10,228,000
Dividends and distributions declared but not yet paid	18,110,000	18,777,000
Change in value of interest rate swaps and interest rate caps	(8,390,000)	18,545,000
Write-off of fully amortized and/or depreciated assets	10,170,000	7,084,000
Additions to real estate included in accounts payable and accrued expenses	$ 8,306,000	$ 6,868,000