REAL ESTATE PROPERTY ACQUISITIONS AND ACQUIRED INTANGIBLES (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2026 USD ($) a	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) ft² a
Asset Acquisition [Line Items]
Amortization of above and below market leases		$ 1,576,000	$ 1,567,000
Amortization expense for lease intangibles		3,044,000	$ 3,218,000
Land		948,352,000		$ 951,787,000
Building and building improvements		4,245,312,000		4,173,416,000
Tenant and other improvements		836,107,000		829,609,000
In-place lease intangibles		62,813,000		64,619,000
Acquired above market lease intangibles		$ 675,000		674,000
2026 Operating Property Acquisitions | Legend Point Logistics Crossing 2 & 3
Asset Acquisition [Line Items]
Size (square feet) | a		177,000
Date Acquired		Feb. 18, 2026
Asset Acquisition, Consideration Transferred		$ 38,130,000
2026 acquisitions
Asset Acquisition [Line Items]
Land		4,053,000
Building and building improvements		30,629,000
Tenant and other improvements		1,630,000
Total real estate properties acquired		36,312,000
In-place lease intangibles	[1]	2,279,000
Acquired above market lease intangibles	[1]	46,000
Below market lease intangibles	[2]	$ (507,000)
Weighted average remaining lease term of acquired properties		4 years
Total assets acquired, net of liabilities assumed		$ 38,130,000
2025 Acquisitions
Asset Acquisition [Line Items]
Land				31,590,000
Building and building improvements				101,505,000
Tenant and other improvements				6,800,000
Total real estate properties acquired				139,895,000
In-place lease intangibles	[1]			10,331,000
Acquired above market lease intangibles	[1]			207,000
Below market lease intangibles	[2]			$ (7,334,000)
Weighted average remaining lease term of acquired properties				9 years 2 months 12 days
Total assets acquired, net of liabilities assumed				$ 143,099,000
2025 Operating Property Acquisitions
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3]			739,000
Asset Acquisition, Consideration Transferred	[3],[4]			$ 143,099,000
2025 Operating Property Acquisitions | LifeScience Logistics Center
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3]			251,000
Date Acquired	[3]			Jul. 08, 2025
Asset Acquisition, Consideration Transferred	[3],[4]			$ 47,150,000
2025 Operating Property Acquisitions | Lumley Logistics Center
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3]			67,000
Date Acquired	[3]			Jul. 15, 2025
Asset Acquisition, Consideration Transferred	[3],[4]			$ 14,174,000
2025 Operating Property Acquisitions | McKinney Airport Trade Center
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3]			320,000
Date Acquired	[3]			Sep. 19, 2025
Asset Acquisition, Consideration Transferred	[3],[4]			$ 60,641,000
2025 Operating Property Acquisitions | EastGroup Point at Cheyenne
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3]			101,000
Date Acquired	[3]			Dec. 09, 2025
Asset Acquisition, Consideration Transferred	[3],[4]			$ 21,134,000
2025 development land acquisitions
Asset Acquisition [Line Items]
Acres of real estate investment property | a				300.4
Payments to Acquire Land				$ 118,584,000

[1] In-place lease intangibles and above market lease intangibles are each included in Other assets, net on the Consolidated Balance Sheets. These costs are amortized over the remaining terms of the associated leases in place at the time of acquisition.

[2] Below market lease intangibles are included in Other liabilities on the Consolidated Balance Sheets. These costs are amortized over the remaining terms of the associated leases in place at the time of acquisition.

[3] Operating properties are defined as stabilized real estate properties (land including buildings and improvements) in the Company’s operating portfolio; included in Real estate properties on the Consolidated Balance Sheets. Excludes acquired development land as discussed below.

[4] Cost is calculated in accordance with FASB ASC 805 and represents the sum of the purchase price, closing costs and capitalized acquisition costs.