CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Cash flow from operating activities:
Net income	$ 5,353		$ 60,409	$ 20,655	$ 74,364
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	58,698		51,021	112,714	101,385
Stock-based compensation				3,635	3,628
Amortization and write-off of debt issuance costs and fair market value of debt adjustments				2,206	2,782
Equity in net income of joint ventures	(4,618)		(1,381)	(5,977)	(1,550)
Operating cash distributions from joint ventures				258	1,111
Gain on sale and change in control of interests	0	$ (3,700)	(41,970)	(3,749)	(45,326)
Gain on disposition of real estate, net	22		(4,597)	(183)	(4,455)
Impairment charges	0		2,536	0	2,536
Assumption of building due to ground lease termination				0	(1,800)
Net change in accounts receivable				3,250	5,110
Net change in accounts payable and accrued expenses				(1,623)	(1,659)
Net change in other operating assets and liabilities				(4,389)	(4,019)
Total adjustments				106,142	57,743
Net cash flow provided by operating activities				126,797	132,107
Cash flow from investing activities:
Real estate acquired, net of liabilities and cash assumed				(74,783)	(297,966)
Real estate developed and improvements to operating real estate				(51,278)	(57,092)
Proceeds from disposition of joint venture interests				3,405	39,247
Proceeds from disposition of real estate				0	21,555
Equity contributions to joint ventures				(86)	(117)
Repayment of joint venture advances, net				318	0
Distributions from unconsolidated joint ventures				9,468	5,422
Net cash flow used for investing activities				(112,956)	(288,951)
Cash flow from financing activities:
Proceeds from revolving credit facility, net				175,000	125,000
Proceeds from unsecured term loan				0	100,000
Payment of debt issuance costs				0	(7,582)
Repayment of senior notes				(87,209)	0
Repayment of mortgage debt				(625)	(35,134)
Proceeds from issuance of common shares, net of offering expenses				0	36,857
Repurchase of common shares in conjunction with equity award plans and dividend reinvestment plan				(4,844)	(5,469)
Repurchase of common shares				(26,611)	0
Repurchase of operating partnership units				(1,735)	0
Distributions to redeemable operating partnership units				(37)	(35)
Dividends paid				(60,401)	(58,865)
Net cash flow (used for) provided by financing activities				(6,462)	154,772
Net increase (decrease) in cash, cash equivalents and restricted cash				7,379	(2,072)
Cash, cash equivalents and restricted cash, beginning of period		$ 21,214		21,214	43,252	$ 43,252
Cash, cash equivalents and restricted cash, end of period	$ 28,593		$ 41,180	$ 28,593	$ 41,180	$ 21,214