Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows From Operating Activities
Net income (loss)	$ 84,407	$ 63,212	$ (13,037)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	189,911	216,894	201,806
Gain on sale/disposition of properties	(26,764)	(33,988)	0
Impairment charges	0	0	7,723
Amortization of non-cash items within interest expense	9,089	9,799	10,862
Amortization of acquired above- and below-market leases, net	(2,415)	(4,759)	(5,896)
Amortization of acquired below-market ground leases	7,831	7,831	7,831
Straight-lining of rental revenue	(19,563)	(24,562)	(21,078)
Equity based compensation	20,026	21,011	20,260
Loss on early extinguishment of debt	0	0	214
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Security deposits	10,486	(828)	(1,052)
Tenant and other receivables	(15,643)	(5,306)	2,894
Deferred leasing costs	(17,669)	(36,909)	(16,090)
Prepaid expenses and other assets	(5,186)	(2,263)	5,814
Accounts payable and accrued expenses	746	4,705	(99)
Deferred revenue and other liabilities	(2,765)	(3,664)	12,334
Net cash provided by operating activities	232,491	211,173	212,486
Cash Flows From Investing Activities
Acquisition of real estate property	(26,910)	(115,593)	(117,540)
Net proceeds from disposition of real estate	88,910	11,005	0
Additions to building and improvements	(139,328)	(126,268)	(95,037)
Development costs	(12)	(35)	(165)
Net cash used in investing activities	(77,340)	(230,891)	(212,742)
Cash Flows From Financing Activities
Repayment of mortgage notes payable	(8,632)	(7,504)	(4,091)
Contributions from consolidated joint ventures	187	224	0
Deferred financing costs	0	0	(9,486)
Repurchases of common shares	(13,105)	(90,176)	(46,704)
Private perpetual preferred unit distributions	(4,201)	(4,201)	(4,201)
Dividends paid to common stockholders	(22,684)	(23,109)	(18,110)
Distributions paid to non-controlling interests in the operating partnership	(14,438)	(15,476)	(10,453)
Net cash used in financing activities	(62,873)	(140,242)	(93,045)
Net increase (decrease) in cash and cash equivalents and restricted cash	92,278	(159,960)	(93,301)
Cash and cash equivalents and restricted cash—beginning of period	314,678	474,638	567,939
Cash and cash equivalents and restricted cash—end of period	406,956	314,678	474,638
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	264,434	423,695	526,714
Restricted cash at beginning of period	50,244	50,943	41,225
Cash and cash equivalents at end of period	346,620	264,434	423,695
Restricted cash at end of period	60,336	50,244	50,943
Cash and cash equivalents and restricted cash	406,956	314,678	474,638
Supplemental disclosures of cash flow information:
Cash paid for interest	92,000	91,012	77,610
Cash paid for income taxes	1,390	200	644
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	51,815	44,293	49,247
Write-off of fully depreciated assets	33,391	35,124	31,341
Derivative instruments at fair values included in prepaid expenses and other assets	11,800	17,902	0
Derivative instruments at fair values included in accounts payable and accrued expenses	85	0	25,308
Conversion of operating partnership units and Class B shares to Class A shares	17,671	4,495	10,426
Transfer of assets related to assets held for sale	0	35,538	0
Transfer of liabilities related to assets held for sale	0	5,943	0
Mortgage assumed in connection with sale of real estate	0	30,117	0
Debt assumed with the acquisition of real estate properties	0	0	177,453
Contribution from other partnerships	$ 0	$ 0	$ 13,269