Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income	$ 186,660	$ 302,803
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	165,868	157,192
Amortization of deferred loan costs and debt premiums	2,983	2,821
(Accretion) and amortization of above and below market lease intangibles, net	(13,842)	(10,528)
Stock-based compensation, net of capitalization	8,854	8,501
Equity in income of investments in real estate partnerships	(23,785)	(36,646)
Gain on sale of real estate, net of tax	(331)	(106,239)
Distribution of earnings from investments in real estate partnerships	31,869	29,207
Deferred compensation expense (income)	2,940	(7,007)
Realized and unrealized (gain) loss on investments	(3,376)	8,033
Changes in assets and liabilities:
Tenant and other receivables	(14,549)	(8,252)
Deferred leasing costs	(3,591)	(4,263)
Other assets	(17,951)	(8,353)
Accounts payable and other liabilities	6,091	(172)
Tenants' security, escrow deposits and prepaid rent	6,837	660
Net cash provided by operating activities	334,677	327,757
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 in 2022		(139,775)
Real estate development and capital improvements	(100,114)	(99,470)
Proceeds from sale of real estate and FF&E	3,745	136,421
Issuance of notes receivable	(4,000)
Investments in real estate partnerships	(3,109)	(11,549)
Return of capital from investments in real estate partnerships	3,644	48,473
Dividends on investment securities	420	214
Acquisition of investment securities	(2,748)	(8,313)
Proceeds from sale of investment securities	10,751	8,737
Net cash used in investing activities	(91,411)	(65,262)
Cash flows from financing activities:
Net proceeds from common stock issuance	(10)	61,284
Repurchase of common shares in conjunction with equity award plans	(7,621)	(6,388)
Common shares repurchased through share repurchase program	(20,006)	(71,898)
Proceeds from sale of treasury stock	28	64
Contributions from limited partners in consolidated partnerships, net	1,225	1,234
Distributions to exchangeable operating partnership unit holders	(964)	(950)
Dividends paid to common stockholders	(222,275)	(213,868)
Proceeds from unsecured credit facilities	235,000	75,000
Repayment of unsecured credit facilities	(235,000)	(75,000)
Proceeds from notes payable	15,500
Repayment of notes payable	(29,616)
Scheduled principal payments	(5,054)	(5,728)
Payment of loan costs	(141)	(82)
Net cash used in financing activities	(268,934)	(236,332)
Net (decrease) increase in cash and cash equivalents and restricted cash	(25,668)	26,163
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	43,108	121,190
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $2,534 and $1,815 in 2023 and 2022, respectively)	71,091	70,876
Cash paid for income taxes, net of refunds	573	370
Supplemental disclosure of non-cash transactions:
Common stock and exchangeable operating partnership dividends declared but not paid	111,847	108,215
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
Common stock issued for partnership units exchanged		1,275
Accrued common stock repurchase in Accounts payable and other liabilities		3,521
Issuance of exchangeable operating partnership units	20,000
Change in accrued capital expenditures	9,011	5,050
Common stock issued under dividend reinvestment plan	299	252
Stock-based compensation capitalized	366	373
Contributions from limited partners in consolidated partnerships		5,436
Common stock issued for dividend reinvestment in trust	617	555
Contribution of stock awards into trust	1,844	2,022
Distribution of stock held in trust	2,245	566
Change in fair value of securities	98	1,236
Partnership Interest [Member]
Cash flows from operating activities:
Net income	186,660	302,803
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	165,868	157,192
Amortization of deferred loan costs and debt premiums	2,983	2,821
(Accretion) and amortization of above and below market lease intangibles, net	(13,842)	(10,528)
Stock-based compensation, net of capitalization	8,854	8,501
Equity in income of investments in real estate partnerships	(23,785)	(36,646)
Gain on sale of real estate, net of tax	(331)	(106,239)
Distribution of earnings from investments in real estate partnerships	31,869	29,207
Deferred compensation expense (income)	2,940	(7,007)
Realized and unrealized (gain) loss on investments	(3,376)	8,033
Changes in assets and liabilities:
Tenant and other receivables	(14,549)	(8,252)
Deferred leasing costs	(3,591)	(4,263)
Other assets	(17,951)	(8,353)
Accounts payable and other liabilities	6,091	(172)
Tenants' security, escrow deposits and prepaid rent	6,837	660
Net cash provided by operating activities	334,677	327,757
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 in 2022		(139,775)
Real estate development and capital improvements	(100,114)	(99,470)
Proceeds from sale of real estate and FF&E	3,745	136,421
Issuance of notes receivable	(4,000)
Investments in real estate partnerships	(3,109)	(11,549)
Return of capital from investments in real estate partnerships	3,644	48,473
Dividends on investment securities	420	214
Acquisition of investment securities	(2,748)	(8,313)
Proceeds from sale of investment securities	10,751	8,737
Net cash used in investing activities	(91,411)	(65,262)
Cash flows from financing activities:
Net proceeds from common stock issuance	(10)	61,284
Repurchase of common shares in conjunction with equity award plans	(7,621)	(6,388)
Common shares repurchased through share repurchase program	(20,006)	(71,898)
Proceeds from sale of treasury stock	28	64
Contributions from limited partners in consolidated partnerships, net	1,225	1,234
Dividends paid to common stockholders	(223,239)	(214,818)
Proceeds from unsecured credit facilities	235,000	75,000
Repayment of unsecured credit facilities	(235,000)	(75,000)
Proceeds from notes payable	15,500
Repayment of notes payable	(29,616)
Scheduled principal payments	(5,054)	(5,728)
Payment of loan costs	(141)	(82)
Net cash used in financing activities	(268,934)	(236,332)
Net (decrease) increase in cash and cash equivalents and restricted cash	(25,668)	26,163
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	43,108	121,190
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $2,534 and $1,815 in 2023 and 2022, respectively)	71,091	70,876
Cash paid for income taxes, net of refunds	573	370
Supplemental disclosure of non-cash transactions:
Common stock and exchangeable operating partnership dividends declared but not paid	111,847	108,215
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
Common stock issued by Parent Company for partnership units exchanged		1,275
Accrued common stock repurchase in Accounts payable and other liabilities		3,521
Issuance of exchangeable operating partnership units	20,000
Change in accrued capital expenditures	9,011	5,050
Common stock issued under dividend reinvestment plan	299	252
Stock-based compensation capitalized	366	373
Contributions from limited partners in consolidated partnerships		5,436
Common stock issued for dividend reinvestment in trust	617	555
Contribution of stock awards into trust	1,844	2,022
Distribution of stock held in trust	2,245	566
Change in fair value of securities	$ 98	$ 1,236