Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 278,833	$ 391,650
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	253,373	237,462
Amortization of deferred loan costs and debt premiums	5,124	4,297
(Accretion) and amortization of above and below market lease intangibles, net	(21,573)	(15,625)
Stock-based compensation, net of capitalization	14,203	12,592
Equity in income of investments in real estate partnerships	(36,302)	(47,855)
Gain on sale of real estate, net of tax	(515)	(106,459)
Distribution of earnings from investments in real estate partnerships	48,451	45,238
Deferred compensation expense (income)	2,148	(8,016)
Realized and unrealized (gain) loss on investments	(2,252)	9,253
Changes in assets and liabilities:
Tenant and other receivables	(3,094)	(18,544)
Deferred leasing costs	(7,705)	(7,022)
Other assets	(7,577)	(4,312)
Accounts payable and other liabilities	20,875	21,656
Tenants' security, escrow deposits and prepaid rent	3,696	13,927
Net cash provided by operating activities	547,685	528,242
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 in 2022	(2,033)	(141,275)
Real estate development and capital improvements	(158,982)	(143,724)
Proceeds from sale of real estate and FF&E	10,338	137,280
Issuance of notes receivable	(4,000)
Investments in real estate partnerships	(9,118)	(13,573)
Return of capital from investments in real estate partnerships	3,644	48,473
Dividends on investment securities	571	336
Acquisition of investment securities	(5,206)	(15,205)
Proceeds from sale of investment securities	13,747	15,821
Net cash used in investing activities	(231,527)	(111,867)
Cash flows from financing activities:
Net proceeds from common stock issuance	4	61,284
Repurchase of common shares in conjunction with equity award plans	(7,653)	(6,438)
Common shares repurchased through share repurchase program	(20,006)	(75,419)
Proceeds from sale of treasury stock	62	64
Contributions from limited partners in consolidated partnerships, net	3,167	1,568
Distributions to exchangeable operating partnership unit holders	(1,666)	(1,413)
Distributions to partners	(332,627)	(321,484)
Proceeds from unsecured credit facilities	442,000	95,000
Repayment of unsecured credit facilities	(365,000)	(95,000)
Proceeds from notes payable	46,500
Repayment of notes payable	(60,257)	(5,995)
Scheduled principal payments	(7,977)	(8,503)
Payment of loan costs	(411)	(82)
Net cash used in financing activities	(303,864)	(356,418)
Net increase in cash and cash equivalents and restricted cash	12,294	59,957
Cash and cash equivalents and restricted cash at beginning of the period	68,776	95,027
Cash and cash equivalents and restricted cash at end of the period	81,070	154,984
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,026 and $2,985 in 2023 and 2022, respectively)	116,686	115,011
Cash paid for income taxes, net of refunds	728	488
Supplemental disclosure of non-cash transactions:
Common and Preferred stock, and exchangeable operating partnership dividends declared but not paid	122,946	107,410
Acquisition of real estate previously held within investments in real estate partnerships		17,179
Mortgage loans assumed by Company with the acquisition of real estate		22,779
Right of use assets obtained in exchange for new operating lease liabilities	32,002
Sale of leased asset in exchange for net investment in sales-type lease	8,510
Common stock issued for partnership units exchanged	199	1,275
Exchangeable operating partnership units issued for acquisition of real estate	20,000
Change in accrued capital expenditures	20,967	10,230
Common stock issued under dividend reinvestment plan	461	388
Stock-based compensation capitalized	638	550
Contributions from limited partners in consolidated partnerships		5,434
Common stock issued for dividend reinvestment in trust	905	840
Contribution of stock awards into trust	1,961	2,136
Distribution of stock held in trust	2,245	786
Change in fair value of securities	215	1,896
UBP Acquisition [Member]
Cash flows from investing activities:
Acquisition of UBP, net of cash acquired of $14,143	(80,488)
Supplemental disclosure of non-cash transactions:
Notes payable assumed in acquisition, at fair value	284,706
Non controlling interest assumed in acquisition fair value	64,492
Common Stock [Member] | UBP Acquisition [Member]
Supplemental disclosure of non-cash transactions:
Stock exchanged	818,530
Preferred Stock [Member] | UBP Acquisition [Member]
Supplemental disclosure of non-cash transactions:
Stock exchanged	225,000
Partnership Interest [Member]
Cash flows from operating activities:
Net income	278,833	391,650
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	253,373	237,462
Amortization of deferred loan costs and debt premiums	5,124	4,297
(Accretion) and amortization of above and below market lease intangibles, net	(21,573)	(15,625)
Stock-based compensation, net of capitalization	14,203	12,592
Equity in income of investments in real estate partnerships	(36,302)	(47,855)
Gain on sale of real estate, net of tax	(515)	(106,459)
Distribution of earnings from investments in real estate partnerships	48,451	45,238
Deferred compensation expense (income)	2,148	(8,016)
Realized and unrealized (gain) loss on investments	(2,252)	9,253
Changes in assets and liabilities:
Tenant and other receivables	(3,094)	(18,544)
Deferred leasing costs	(7,705)	(7,022)
Other assets	(7,577)	(4,312)
Accounts payable and other liabilities	20,875	21,656
Tenants' security, escrow deposits and prepaid rent	3,696	13,927
Net cash provided by operating activities	547,685	528,242
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 in 2022	(2,033)	(141,275)
Real estate development and capital improvements	(158,982)	(143,724)
Proceeds from sale of real estate and FF&E	10,338	137,280
Issuance of notes receivable	(4,000)
Investments in real estate partnerships	(9,118)	(13,573)
Return of capital from investments in real estate partnerships	3,644	48,473
Dividends on investment securities	571	336
Acquisition of investment securities	(5,206)	(15,205)
Proceeds from sale of investment securities	13,747	15,821
Net cash used in investing activities	(231,527)	(111,867)
Cash flows from financing activities:
Net proceeds from common stock issuance	4	61,284
Repurchase of common shares in conjunction with equity award plans	(7,653)	(6,438)
Common shares repurchased through share repurchase program	(20,006)	(75,419)
Proceeds from sale of treasury stock	62	64
Contributions from limited partners in consolidated partnerships, net	3,167	1,568
Distributions to partners	(334,293)	(322,897)
Proceeds from unsecured credit facilities	442,000	95,000
Repayment of unsecured credit facilities	(365,000)	(95,000)
Proceeds from notes payable	46,500
Repayment of notes payable	(60,257)	(5,995)
Scheduled principal payments	(7,977)	(8,503)
Payment of loan costs	(411)	(82)
Net cash used in financing activities	(303,864)	(356,418)
Net increase in cash and cash equivalents and restricted cash	12,294	59,957
Cash and cash equivalents and restricted cash at beginning of the period	68,776	95,027
Cash and cash equivalents and restricted cash at end of the period	81,070	154,984
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,026 and $2,985 in 2023 and 2022, respectively)	116,686	115,011
Cash paid for income taxes, net of refunds	728	488
Supplemental disclosure of non-cash transactions:
Common and Preferred stock, and exchangeable operating partnership dividends declared but not paid	122,946	107,410
Acquisition of real estate previously held within investments in real estate partnerships		17,179
Mortgage loans assumed by Company with the acquisition of real estate		22,779
Right of use assets obtained in exchange for new operating lease liabilities	32,002
Sale of leased asset in exchange for net investment in sales-type lease	8,510
Notes payable assumed in acquisition, at fair value	284,706
Non controlling interest assumed in acquisition fair value	64,492
Common stock issued by Parent Company for partnership units exchanged	199	1,275
Exchangeable operating partnership units issued for acquisition of real estate	20,000
Change in accrued capital expenditures	20,967	10,230
Common stock issued under dividend reinvestment plan	461	388
Stock-based compensation capitalized	638	550
Contributions from limited partners in consolidated partnerships		5,434
Common stock issued for dividend reinvestment in trust	905	840
Contribution of stock awards into trust	1,961	2,136
Distribution of stock held in trust	2,245	786
Change in fair value of securities	215	$ 1,896
Partnership Interest [Member] | UBP Acquisition [Member]
Cash flows from investing activities:
Acquisition of UBP, net of cash acquired of $14,143	(80,488)
Partnership Interest [Member] | Common Stock [Member] | UBP Acquisition [Member]
Supplemental disclosure of non-cash transactions:
Stock exchanged	818,530
Partnership Interest [Member] | Preferred Stock [Member] | UBP Acquisition [Member]
Supplemental disclosure of non-cash transactions:
Stock exchanged	$ 225,000