CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)		$ 8,139	$ (1,749)	$ (65,251)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		138,910	135,984	135,917
Loss (gain) on disposition of properties and other investments		834	0	(58,634)
Net Unrealized holding losses (gains) on investments		4,211	(1,634)	37,751
Stock compensation expense		12,794	12,753	11,122
Straight-line rents		277	(1,392)	(8,669)
Equity in (earnings) losses of unconsolidated affiliates		(15,178)	7,677	32,907
Distributions of operating income from unconsolidated affiliates		22,874	3,844	24,179
Adjustments to straight-line rent reserves		(2,849)	0	(292)
Amortization of financing costs		8,049	6,481	5,639
Non-cash lease expense		3,745	3,596	3,462
Adjustments to allowance for credit loss		0	(1,241)	(102)
Acceleration of below market lease		0	(8,057)	0
Impairment charges		1,678	3,686	33,311
Other, net		(5,105)	(5,818)	(7,675)
Changes in assets and liabilities:
Rents receivable		(6,665)	2,538	1,586
Other liabilities		(4,824)	15,492	(2,959)
Accounts payable and accrued expenses		(2,921)	2,045	(2,141)
Prepaid expenses and other assets		(19,539)	(14,756)	(3,452)
Lease liabilities - operating leases		(3,982)	(3,691)	(3,488)
Net cash provided by operating activities		140,448	155,758	133,211
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions of real estate		(161,533)	(126,545)	(242,633)
Proceeds from the disposition of properties and other investments, net		89,078	0	224,558
Investments in unconsolidated affiliates		(33,795)	(53,736)	(154,695)
Development, construction and property improvement costs		(80,250)	(69,540)	(51,046)
(Deposits) refund for properties under purchase contract		(11,500)	1,080	(729)
Deposits for properties under sales contract		0	1,515	2,000
Change in control of previously unconsolidated affiliate		0	0	3,592
Return of capital from unconsolidated affiliates		24,639	44,486	77,774
Payment of deferred leasing costs		(9,251)	(9,007)	(7,997)
Acquisition of investment interests		0	0	(4,527)
Proceeds from sale of marketable securities		14,301	4,636	0
Proceeds from repayment of note receivable		6,000	0	29,530
Issuance of note receivable		(8,352)	(1,426)	0
Net cash used in investing activities		(170,663)	(208,537)	(124,173)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from unsecured debt		435,384	283,989	850,120
Principal payments on unsecured debt		(790,271)	(209,599)	(656,556)
Issuances of Common Shares		459,892	0	119,485
Capital contributions from noncontrolling interests		51,118	59,926	109,428
Principal payments on mortgage and other notes		(70,452)	(112,283)	(447,998)
Proceeds received from mortgage and other notes		92,200	132,902	204,138
Distributions to noncontrolling interests		(41,996)	(36,389)	(84,723)
Dividends paid to Common Shareholders		(76,323)	(68,568)	(64,586)
Payment of deferred financing and other costs		(12,491)	(4,026)	(9,348)
Acquisition of noncontrolling interest		0	0	(24,336)
Payments of finance lease obligations		(2,437)	(100)	0
Net cash provided by (used in) financing activities		44,624	45,852	(4,376)
Increase (decrease) in cash and restricted cash		14,409	(6,927)	4,662
Cash of $17,481, $17,158 and $17,746 and restricted cash of $7,813, $15,063 and $9,813, respectively, beginning of year		25,294	32,221	27,559
Cash of $16,806, $17,481 and $17,158 and restricted cash of $22,897, $7,813 and $15,063, respectively, end of year		39,703	25,294	32,221
Supplemental disclosure of cash flow information
Cash paid during the period for interest, net of capitalized interest of $7,175 and $7,206 and $4,166 respectively	[1]	118,728	119,550	65,109
Cash paid for income taxes, net of refunds		212	301	11
Supplemental disclosure of non-cash investing and financing activities
Distribution declared and payable		24,420	18,372	18,368
Assumption of accounts payable and accrued expenses through acquisition of real estate		2,534	645	4,062
Disposition of 146 Geary Street upon deed-in-lieu of foreclosure		0	19,338	0
Extinguishment of the obligations under the mortgage loan for 146 Geary Street upon deed-in-lieu of foreclosure		0	(19,338)	0
Issuance of note receivable used as capital contributions from redeemable noncontrolling interests		0	796	65,945
Conversion of Common OP Units to Common Shares		20,929	0	0
Accrued interest on note receivable recorded to redeemable noncontrolling interest		11,825	9,350	3,923
Recognition of non-refundable deposit upon expiration of sale agreement		3,315	0	0
Distributions to noncontrolling interests of marketable securities		0	49,117	0
Property contributed to an unconsolidated affiliate		2,432	0	0
Reclassification of investment in unconsolidated affiliate to marketable securities		0	32,745	0
Reclassification of noncontrolling interest in excess of amount paid to additional paid-in capital		0	0	67,475
Change in control of previously unconsolidated investment
Increase in real estate		0	0	(55,791)
Increase in mortgage notes payable		0	0	35,970
Decrease in investments in and advances to unconsolidated affiliates		0	0	17,822
Decrease in notes receivable		0	0	5,306
Decrease in reserve on note receivable		0	0	(4,582)
Decrease in accrued interest on notes receivable		0	0	4,691
Change in other assets and liabilities		0	0	176
Increase in cash and restricted cash upon change of control		$ 0	$ 0	$ 3,592

[1] Interest paid for the year ended December 31, 2024, 2023 and 2022 excludes the cash flows from net settlements on interest rate swap contracts, which was a net receipt of cash of $27.4 million, a net payment of $28.7 million, and a net receipt of $8.3 million, respectively.