Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 488,035	$ 366,288	$ 47,317
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	319,697	303,331	345,900
Amortization of deferred loan costs and debt premiums	5,799	6,003	9,023
(Accretion) and amortization of above and below market lease intangibles, net	(20,995)	(22,936)	(40,540)
Stock-based compensation, net of capitalization	16,521	12,515	13,581
Equity in income of investments in real estate partnerships	(59,824)	(47,086)	(34,169)
Gain on sale of real estate, net of tax	(109,005)	(91,119)	(67,465)
Provision for impairment of real estate		84,389	18,536
Goodwill impairment			132,128
Early extinguishment of debt			21,837
Distribution of earnings from investments in real estate partnerships	61,416	71,934	47,703
Settlement of derivative instrument		(2,472)
Deferred compensation (revenue) expense	(6,128)	4,572	4,668
Realized and unrealized loss (gain) on investments	7,040	(5,348)	(5,519)
Changes in assets and liabilities:
Tenant and other receivables	(35,274)	(24,869)	16,944
Deferred leasing costs	(10,801)	(6,966)	(6,973)
Other assets	1,292	(1,226)	(1,200)
Accounts payable and other liabilities	(9,088)	6,677	997
Tenants’ security, escrow deposits and prepaid rent	7,130	5,701	(3,650)
Net cash provided by operating activities	655,815	659,388	499,118
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 and $2,991 in 2022 and 2021, respectively	(169,639)	(392,051)	(16,767)
Real estate development and capital improvements	(195,418)	(177,631)	(180,804)
Proceeds from sale of real estate	143,133	206,193	189,444
Proceeds from property insurance casualty claims			7,957
Collection (issuance) of notes receivable, net	1,823	(20)	(1,340)
Investments in real estate partnerships	(36,266)	(23,476)	(51,440)
Return of capital from investments in real estate partnerships	48,473	99,945	32,125
Dividends on investment securities	1,113	813	353
Acquisition of investment securities	(21,112)	(23,971)	(25,155)
Proceeds from sale of investment securities	21,785	23,846	19,986
Net cash used in investing activities	(206,108)	(286,352)	(25,641)
Cash flows from financing activities:
Net proceeds from common stock issuance	61,284	82,510	125,608
Repurchase of common shares in conjunction with equity award plans	(6,447)	(4,083)	(5,512)
Proceeds from sale of treasury stock/units	64	96	269
Common shares repurchased through share repurchase program	(75,419)
Distributions to limited partners in consolidated partnerships, net	(7,245)	(4,345)	(2,770)
Distributions to exchangeable operating partnership unit holders	(1,867)	(1,815)	(1,366)
Dividends paid to common stockholders	(428,276)	(403,085)	(300,537)
Repayment of fixed rate unsecured notes			(300,000)
Proceeds from issuance of fixed rate unsecured notes, net			598,830
Proceeds from unsecured credit facilities	95,000		610,000
Repayments of proceeds from unsecured credit facilities, net	(95,000)	(265,000)	(830,000)
Repayment of notes payable	(6,745)	(42,014)	(67,189)
Scheduled principal payments	(11,219)	(11,255)	(11,104)
Payment of loan costs	(88)	(7,468)	(5,063)
Early redemption costs			(21,755)
Net cash used in financing activities	(475,958)	(656,459)	(210,589)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(26,251)	(283,423)	262,888
Cash, cash equivalents, and restricted cash at beginning of the year	95,027	378,450	115,562
Cash, cash equivalents, and restricted cash at end of the year	68,776	95,027	378,450
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,166, $4,202, and $4,355 in 2022, 2021, and 2020, respectively)	141,359	140,084	151,338
Cash paid for income taxes, net of refunds	570	378	1,870
Supplemental disclosure of non-cash transactions:
Common stock and exchangeable operating partnership dividends declared but not paid	111,709	107,480	101,412
Exchangeable operating partnership units issued for acquisition of real estate			1,275
Previously held equity investments in real estate assets acquired	17,179	(4,609)	5,986
Mortgage loans assumed by Company with the acquisition of real estate	22,779	111,104	16,359
Mortgage loan assumed by purchaser with the sale of real estate			8,250
Common stock issued by Parent Company for partnership units exchanged	1,275	99
Real estate received in lieu of promote interest		13,589
Change in fair value of securities	1,658	513	315
Change in accrued capital expenditures	4,888	10,188	12,166
Common stock issued under dividend reinvestment plan	524	1,286	1,139
Stock-based compensation capitalized	735	666	1,119
Contributions from (distributions to) limited partners in consolidated partnerships, net	5,436		(1,512)
Reallocation of equity upon acquisition of a limited partner's interest in a consolidated partnership	6,266
Common stock issued for dividend reinvestment in trust	1,126	1,084	819
Contribution of stock awards into trust	2,250	1,416	1,524
Distribution of stock held in trust	786	3,647	1,052
Partnership Interest [Member]
Cash flows from operating activities:
Net income	488,035	366,288	47,317
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	319,697	303,331	345,900
Amortization of deferred loan costs and debt premiums	5,799	6,003	9,023
(Accretion) and amortization of above and below market lease intangibles, net	(20,995)	(22,936)	(40,540)
Stock-based compensation, net of capitalization	16,521	12,515	13,581
Equity in income of investments in real estate partnerships	(59,824)	(47,086)	(34,169)
Gain on sale of real estate, net of tax	(109,005)	(91,119)	(67,465)
Provision for impairment of real estate		84,389	18,536
Goodwill impairment			132,128
Early extinguishment of debt			21,837
Distribution of earnings from investments in real estate partnerships	61,416	71,934	47,703
Settlement of derivative instrument		(2,472)
Deferred compensation (revenue) expense	(6,128)	4,572	4,668
Realized and unrealized loss (gain) on investments	7,040	(5,348)	(5,519)
Changes in assets and liabilities:
Tenant and other receivables	(35,274)	(24,869)	16,944
Deferred leasing costs	(10,801)	(6,966)	(6,973)
Other assets	1,292	(1,226)	(1,200)
Accounts payable and other liabilities	(9,088)	6,677	997
Tenants’ security, escrow deposits and prepaid rent	7,130	5,701	(3,650)
Net cash provided by operating activities	655,815	659,388	499,118
Cash flows from investing activities:
Acquisition of operating real estate, net of cash acquired of $3,061 and $2,991 in 2022 and 2021, respectively	(169,639)	(392,051)	(16,767)
Real estate development and capital improvements	(195,418)	(177,631)	(180,804)
Proceeds from sale of real estate	143,133	206,193	189,444
Proceeds from property insurance casualty claims			7,957
Collection (issuance) of notes receivable, net	1,823	(20)	(1,340)
Investments in real estate partnerships	(36,266)	(23,476)	(51,440)
Return of capital from investments in real estate partnerships	48,473	99,945	32,125
Dividends on investment securities	1,113	813	353
Acquisition of investment securities	(21,112)	(23,971)	(25,155)
Proceeds from sale of investment securities	21,785	23,846	19,986
Net cash used in investing activities	(206,108)	(286,352)	(25,641)
Cash flows from financing activities:
Net proceeds from common stock issuance	61,284	82,510	125,608
Repurchase of common shares in conjunction with equity award plans	(6,447)	(4,083)	(5,512)
Proceeds from sale of treasury stock/units	64	96	269
Common shares repurchased through share repurchase program	(75,419)
Distributions to limited partners in consolidated partnerships, net	(7,245)	(4,345)	(2,770)
Dividends paid to common stockholders	(430,143)	(404,900)	(301,903)
Repayment of fixed rate unsecured notes			(300,000)
Proceeds from issuance of fixed rate unsecured notes, net			598,830
Proceeds from unsecured credit facilities	95,000		610,000
Repayments of proceeds from unsecured credit facilities, net	(95,000)	(265,000)	(830,000)
Repayment of notes payable	(6,745)	(42,014)	(67,189)
Scheduled principal payments	(11,219)	(11,255)	(11,104)
Payment of loan costs	(88)	(7,468)	(5,063)
Early redemption costs			(21,755)
Net cash used in financing activities	(475,958)	(656,459)	(210,589)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(26,251)	(283,423)	262,888
Cash, cash equivalents, and restricted cash at beginning of the year	95,027	378,450	115,562
Cash, cash equivalents, and restricted cash at end of the year	68,776	95,027	378,450
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,166, $4,202, and $4,355 in 2022, 2021, and 2020, respectively)	141,359	140,084	151,338
Cash paid for income taxes, net of refunds	570	378	1,870
Supplemental disclosure of non-cash transactions:
Common stock and exchangeable operating partnership dividends declared but not paid	111,709	107,480	101,412
Exchangeable operating partnership units issued for acquisition of real estate			1,275
Previously held equity investments in real estate assets acquired	17,179	(4,609)	5,986
Mortgage loans assumed by Company with the acquisition of real estate	22,779	111,104	16,359
Mortgage loan assumed by purchaser with the sale of real estate			8,250
Common stock issued by Parent Company for partnership units exchanged	1,275	99	1,275
Real estate received in lieu of promote interest		13,589
Change in fair value of securities	1,658	513	315
Change in accrued capital expenditures	4,888	10,188	12,166
Common stock issued under dividend reinvestment plan	524	1,286	1,139
Stock-based compensation capitalized	735	666	1,119
Contributions from (distributions to) limited partners in consolidated partnerships, net	5,436		(1,512)
Reallocation of equity upon acquisition of a limited partner's interest in a consolidated partnership	6,266
Common stock issued for dividend reinvestment in trust	1,126	1,084	819
Contribution of stock awards into trust	2,250	1,416	1,524
Distribution of stock held in trust	$ 786	$ 3,647	$ 1,052