REAL ESTATE PROPERTY ACQUISITIONS AND ACQUIRED INTANGIBLES (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2024 USD ($) ft²	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) ft²
Asset Acquisition [Line Items]
Amortization expense for lease intangibles		$ 1,926,000	$ 1,962,000
Amortization of above and below market leases		(607,000)	$ (599,000)
Land		835,795,000		$ 814,364,000
Building and building improvements		3,382,163,000		3,336,615,000
Tenant and other improvements		692,300,000		684,573,000
In-place lease intangibles		38,851,000		39,600,000
Below market lease intangibles		10,640,000		11,451,000
2024 Acquisitions
Asset Acquisition [Line Items]
Land		18,855,000
Building and building improvements		31,003,000
Tenant and other improvements		2,208,000
Total real estate properties acquired		52,066,000
In-place lease intangibles	[1]	2,714,000
Below market lease intangibles	[2]	(42,000)
Assets acquired, net of liabilities assumed		$ 54,859,000
Weighted average remaining lease term of acquired properties		6 years 2 months 12 days
Above market lease intangibles	[1]	$ 121,000
2024 Operating Property Acquisitions | Spanish Ridge Industrial Park
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]	231,000
Date Acquired	[3],[4]	Jan. 23, 2024
Asset Acquisition, Consideration Transferred	[3],[4],[5]	$ 54,859,000
2024 development land acquisitions
Asset Acquisition [Line Items]
Acres of real estate investment property | ft²		34.3
Payments to Acquire Land		$ 3,302,000
2023 Acquisitions
Asset Acquisition [Line Items]
Land				44,676,000
Building and building improvements				111,082,000
Tenant and other improvements				4,346,000
Total real estate properties acquired				160,104,000
In-place lease intangibles	[1]			7,242,000
Below market lease intangibles	[2]			(2,230,000)
Assets acquired, net of liabilities assumed				$ 165,116,000
Weighted average remaining lease term of acquired properties				8 years
2023 Operating Property Acquisitions
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			987,000
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 165,116,000
2023 Operating Property Acquisitions | Craig Corporate Center
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			156,000
Date Acquired	[3],[4]			Apr. 18, 2023
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 34,365,000
2023 Operating Property Acquisitions | Blue Diamond Business Park
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			254,000
Date Acquired	[3],[4]			Sep. 05, 2023
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 52,973,000
2023 Operating Property Acquisitions | McKinney Logistics Center
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			193,000
Date Acquired	[3],[4]			Oct. 02, 2023
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 25,739,000
2023 Operating Property Acquisitions | Park at Myatt
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			171,000
Date Acquired	[3],[4]			Nov. 03, 2023
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 30,793,000
2023 Operating Property Acquisitions | Pelzer Point Commerce Center 1
Asset Acquisition [Line Items]
Size (square feet) | ft²	[3],[4]			213,000
Date Acquired	[3],[4]			Dec. 21, 2023
Asset Acquisition, Consideration Transferred	[3],[4],[5]			$ 21,246,000
2023 development land acquisitions
Asset Acquisition [Line Items]
Acres of real estate investment property | ft²				328.3
Payments to Acquire Land				$ 70,664,000

[1] In-place lease intangibles and above market lease intangibles are each included in Other assets 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] Excludes acquired development land as discussed below.

[4] 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.

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