CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash Flows from Operating Activities:
Net (loss) income	$ (74,515,000)	$ 10,160,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	121,515,000	113,022,000
Straight-lining of rental revenue	(245,000)	(4,001,000)
Amortization of stock-based compensation expense	9,331,000	10,704,000
Amortization of deferred financing costs	3,077,000	3,077,000
Loss from unconsolidated joint ventures	34,164,000	9,529,000
Distributions of earnings from unconsolidated joint ventures	208,000	34,000
Realized and unrealized losses on real estate related fund investments	46,803,000
Loss (income) from unconsolidated real estate related funds	146,000	(325,000)
Distributions of earnings from unconsolidated real estate related funds	72,000	304,000
Amortization of above and below-market leases, net	(2,484,000)	(673,000)
Other non-cash adjustments	460,000	560,000
Changes in operating assets and liabilities:
Real estate related fund investments	(8,040,000)
Accounts and other receivables	10,174,000	(2,206,000)
Deferred charges	(3,402,000)	(5,097,000)
Other assets	9,081,000	2,741,000
Accounts payable and accrued expenses	(7,263,000)	(4,714,000)
Other liabilities	(1,026,000)	(2,013,000)
Net cash provided by operating activities	138,056,000	131,102,000
Cash Flows from Investing Activities:
Additions to real estate	(44,310,000)	(54,136,000)
Investments in and contributions of capital to unconsolidated joint ventures	(40,715,000)	(11,252,000)
Advances to a partner in One Steuart Lane	(35,715,000)
Repayment of advances by a partner in One Steuart Lane	38,935,000
Contributions of capital to unconsolidated real estate related funds	(2,077,000)	(4,219,000)
Due from affiliates		(51,916,000)
Repayment of amounts due from affiliates		51,916,000
Distributions of capital from unconsolidated real estate related funds		1,506,000
Net cash used in investing activities	(83,882,000)	(68,101,000)
Cash Flows from Financing Activities:
Contributions from noncontrolling interests in consolidated real estate related funds	53,354,000
Distributions to noncontrolling interests in consolidated real estate related funds	(6,263,000)
Dividends paid to common stockholders	(33,660,000)	(32,307,000)
Distributions paid to common unitholders	(2,476,000)	(3,365,000)
Distributions to noncontrolling interests in consolidated joint ventures	(5,463,000)	(24,848,000)
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	3,440,000	(60,800,000)
Net increase in cash and cash equivalents and restricted cash	57,614,000	2,201,000
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	507,431,000	531,867,000
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	434,751,000	506,933,000
Restricted cash at end of period	72,680,000	24,934,000
Cash and cash equivalents and restricted cash at end of period	507,431,000	531,867,000
Supplemental Disclosure of Cash Flow Information:
Cash payments for interest	68,892,000	67,332,000
Cash payments for income taxes, net of refunds	598,000	1,941,000
Non-Cash Transactions:
Common shares issued upon redemption of common units	10,877,000	107,212,000
Dividends and distributions declared but not yet paid	8,188,000	18,787,000
Change in value of interest rate swaps and interest rate caps	(11,525,000)	24,654,000
Write-off of fully amortized and/or depreciated assets	20,229,000	8,617,000
Additions to real estate included in accounts payable and accrued expenses	$ 12,715,000	7,212,000
Transfer of deposit to investment in unconsolidated joint ventures		$ 6,230,000