CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
OPERATING ACTIVITIES
Net Income	$ 43,465	$ 44,704	$ 46,165	$ 63,604	$ 88,169	$ 109,769
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	42,295		37,461		83,309	73,802
Stock-based compensation expense					4,954	4,320
Gain on sales of real estate investments					(4,809)	(40,999)
Gain on sales of non-operating real estate					(446)	0
Gain on casualties and involuntary conversion					(2,069)	0
Changes in operating assets and liabilities:
Accrued income and other assets					(13,004)	598
Accounts payable, accrued expenses and prepaid rent					22,291	28,104
Other					384	558
NET CASH PROVIDED BY OPERATING ACTIVITIES					178,779	176,152
INVESTING ACTIVITIES
Development and value-add properties					(172,940)	(283,451)
Purchases of real estate					(34,365)	(2,049)
Real estate improvements					(28,733)	(21,723)
Net proceeds from sales of real estate investments					13,821	51,006
Leasing commissions					(16,548)	(18,362)
Proceeds from casualties and involuntary conversion on real estate assets					1,339	0
Changes in accrued development costs					20,614	16,062
Changes in other assets and other liabilities					8,009	(2,621)
NET CASH USED IN INVESTING ACTIVITIES					(208,803)	(261,138)
FINANCING ACTIVITIES
Proceeds from unsecured bank credit facilities					275,080	501,523
Repayments on unsecured bank credit facilities					(445,080)	(504,314)
Proceeds from unsecured debt					100,000	250,000
Repayments of unsecured debt					(65,000)	(75,000)
Repayments on secured debt					(49)	(60,047)
Debt issuance costs					(1,649)	(1,030)
Distributions paid to stockholders (not including dividends accrued)					(110,411)	(91,787)
Proceeds from common stock offerings					283,511	74,249
Common stock offering related costs					(441)	(70)
Other					(4,911)	(7,376)
NET CASH PROVIDED BY FINANCING ACTIVITIES					31,050	86,148
INCREASE IN CASH AND CASH EQUIVALENTS					1,026	1,162
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD		$ 56		$ 4,393	56	4,393	$ 4,393
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 1,082		$ 5,555		1,082	5,555	$ 56
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest, net of amounts capitalized of $7,613 and $4,943 for 2023 and 2022, respectively					25,019	15,382
Interest capitalized					7,613	4,943
Cash paid for operating lease liabilities					1,134	962
Common stock issued in the purchase of real estate					0	303,682
Debt assumed in the purchase of real estate					0	60,000
NON-CASH OPERATING ACTIVITY [Abstract]
Operating lease liabilities arising from obtaining right of use assets					$ 0	$ 398