CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash Flows from Operating Activities:
Net (loss) income	$ (25,726,000)	$ 13,871,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	118,941,000	122,849,000
Straight-lining of rental revenue	4,598,000	(3,318,000)
Amortization of stock-based compensation expense	11,612,000	11,262,000
Amortization of deferred financing costs	6,396,000	4,995,000
(Income) loss from unconsolidated joint ventures	(1,959,000)	2,117,000
Distributions of earnings from unconsolidated joint ventures	229,000	217,000
Unrealized losses on real estate related fund investments	0	775,000
Loss (income) from unconsolidated real estate related funds	150,000	(90,000)
Distributions of earnings from unconsolidated real estate related funds	102,000	103,000
Amortization of above and below-market leases, net	(2,829,000)	(2,972,000)
Non-cash gain on extinguishment of IPO related tax liability	0	(15,437,000)
Other non-cash adjustments	(1,103,000)	63,000
Changes in operating assets and liabilities:
Accounts and other receivables	(5,595,000)	4,136,000
Deferred charges and other assets	(24,664,000)	(14,272,000)
Accounts payable and accrued expenses	(10,024,000)	3,184,000
Other liabilities	6,952,000	9,372,000
Net cash provided by operating activities	77,080,000	136,855,000
Cash Flows from Investing Activities:
Additions to real estate	(73,771,000)	(64,840,000)
Distribution of capital from an unconsolidated joint venture	7,810,000	1,792,000
Contributions of capital to unconsolidated joint ventures	(4,629,000)	(1,904,000)
Net cash used in investing activities	(70,590,000)	(64,952,000)
Cash Flows from Financing Activities:
Contributions from noncontrolling interests in consolidated joint ventures	8,376,000	62,220,000
Distributions to noncontrolling interests in consolidated joint ventures	(3,770,000)	(1,637,000)
Debt issuance costs	(411,000)	(10,649,000)
Repurchase of shares related to stock compensation agreements and related tax withholdings	(140,000)	(178,000)
Repayment of notes and mortgages payable	0	(975,000,000)
Proceeds from notes and mortgages payable	0	850,000,000
Contributions from noncontrolling interests in consolidated real estate related funds	0	889,000
Distributions to noncontrolling interests in consolidated real estate related funds	0	(18,311,000)
Dividends paid to common stockholders	0	(15,216,000)
Distributions paid to common unitholders	0	(1,520,000)
Net cash provided by (used in) financing activities	97,628,000	(109,402,000)
Net increase (decrease) in cash and cash equivalents and restricted cash	104,118,000	(37,499,000)
Cash and cash equivalents and restricted cash at beginning of period	555,447,000	509,599,000
Cash and cash equivalents and restricted cash at end of period	659,565,000	472,100,000
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	375,056,000	428,208,000
Restricted cash at beginning of period	180,391,000	81,391,000
Cash and cash equivalents and restricted cash at beginning of period	555,447,000	509,599,000
Cash and cash equivalents at end of period	439,905,000	307,461,000
Restricted cash at end of period	219,660,000	164,639,000
Cash and cash equivalents and restricted cash at end of period	659,565,000	472,100,000
Supplemental Disclosure of Cash Flow Information:
Cash payments for interest	79,438,000	75,923,000
Cash payments for income taxes, net of refunds	551,000	733,000
Non-Cash Transactions:
Write-off of fully amortized and/or depreciated assets	50,988,000	28,645,000
Mezzanine loan receivable in connection with the sale of interest	40,545,000
Common shares issued upon redemption of common units	39,653,000	1,117,000
Additions to real estate included in accounts payable and accrued expenses	21,070,000	7,052,000
Change in value of interest rate swaps and interest rate caps	(474,000)	(10,655,000)
Dividends and distributions declared but not yet paid	0	8,382,000
900 Third Avenue [Member]
Cash Flows from Financing Activities:
Proceeds from the sale of interest	83,307,000	0
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Restricted cash at beginning of period	9,450,000
One Front Street [Member]
Cash Flows from Financing Activities:
Proceeds from the sale of interest	10,266,000	$ 0
Non-Cash Transactions:
Mezzanine loan receivable in connection with the sale of interest	$ 40,545,000