Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cash Flows From Operating Activities
Net income (loss)	$ 63,212	$ (13,037)	$ (22,889)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	216,894	201,806	191,006
Gain on sale/disposition of properties	(33,988)	0	0
Impairment charges	0	7,723	6,204
Amortization of non-cash items within interest expense	9,799	10,862	9,482
Amortization of acquired above and below-market leases, net	(4,759)	(5,896)	(3,627)
Amortization of acquired below-market ground leases	7,831	7,831	7,831
Straight-lining of rental revenue	(24,562)	(21,078)	(5,238)
Equity based compensation	21,011	20,260	25,495
Settlement of derivative contract	0	0	(20,281)
Loss on early extinguishment of debt	0	214	86
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Security deposits	(828)	(1,052)	(151)
Tenant and other receivables	(5,306)	2,894	3,881
Deferred leasing costs	(36,909)	(16,090)	(14,464)
Prepaid expenses and other assets	(2,263)	5,814	(11,730)
Accounts payable and accrued expenses	4,705	(99)	(3,305)
Deferred revenue and other liabilities	(3,664)	12,334	19,993
Net cash provided by operating activities	211,173	212,486	182,293
Cash Flows From Investing Activities
Net proceeds from disposition of real estate	11,005	0	0
Additions to building and improvements	(126,268)	(95,037)	(143,118)
Development costs	(35)	(165)	0
Acquisition of real estate property	(115,593)	(117,540)	0
Net cash used in investing activities	(230,891)	(212,742)	(143,118)
Cash Flows From Financing Activities
Proceeds from mortgage notes payable	0	0	180,000
Repayment of mortgage notes payable	(7,504)	(4,091)	(3,938)
Proceeds from unsecured senior notes	0	0	175,000
Proceeds from unsecured term loan	0	0	175,000
Repayment of unsecured term loan	0	0	(50,000)
Proceeds from unsecured revolving credit facility	0	0	550,000
Repayment of unsecured revolving credit facility	0	0	(550,000)
Contributions from consolidated joint ventures	224	0	0
Deferred financing costs	0	(9,486)	(10,135)
Repurchases of common shares	(90,176)	(46,704)	(143,713)
Private perpetual preferred unit distributions	(4,201)	(4,201)	(4,197)
Dividends paid to common stockholders	(23,109)	(18,110)	(37,181)
Distributions paid to noncontrolling interests in the operating partnership	(15,476)	(10,453)	(23,669)
Net cash(used in) provided by financing activities	(140,242)	(93,045)	257,167
Net increase (decrease) in cash and cash equivalents and restricted cash	(159,960)	(93,301)	296,342
Cash and cash equivalents and restricted cash—beginning of period	474,638	567,939	271,597
Cash and cash equivalents and restricted cash—end of period	314,678	474,638	567,939
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	423,695	526,714	233,946
Restricted cash at beginning of period	50,943	41,225	37,651
Cash and cash equivalents and restricted cash—end of period	264,434	423,695	526,714
Restricted cash at end of period	50,244	50,943	41,225
Cash and cash equivalents and restricted cash	314,678	474,638	567,939
Supplemental disclosures of cash flow information:
Cash paid for interest	91,012	77,610	75,416
Cash paid for income taxes	200	644	1,282
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	44,293	49,247	58,057
Write-off of fully depreciated assets	35,124	31,341	79,527
Derivative instruments at fair values included in prepaid expenses and other assets	17,902	0	0
Derivative instruments at fair values included in accounts payable and accrued expenses	0	25,308	8,849
Conversion of operating partnership units and Class B shares to Class A shares	4,495	10,426	29,863
Transfer of assets related to assets held for sale	35,538	0	0
Transfer of liabilities related to assets held for sale	5,943	0	0
Mortgage assumed in connection with sale of real estate	30,117	0	0
Issuance of Series 2019 private perpetual preferred in exchange for common units	0	0	789
Debt assumed with the acquisition of real estate properties	0	177,453	0
Contribution from other partnerships	$ 0	$ 13,269	$ 0