REAL ESTATE SOLD AND HELD FOR SALE DISCONTINUED OPERATIONS (Details) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) a ft²	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) ft² a
Real Estate Properties Sold and Held for Sale [Line Items]
Real estate, net	$ 4,461,951		$ 4,219,472
Recognized gain	$ 222	$ 446
2023 dispositions
Real Estate Properties Sold and Held for Sale [Line Items]
Size (square feet) | ft²			231,000
Net sales price			$ 36,971
Real estate, net			19,006
Recognized gain			$ 17,965
World Houston 23
Real Estate Properties Sold and Held for Sale [Line Items]
Size (square feet) | ft²			125,000
Date sold			Mar. 31, 2023
Net sales price			$ 9,327
Real estate, net			4,518
Recognized gain			$ 4,809
2023 development land dispositions
Real Estate Properties Sold and Held for Sale [Line Items]
Acres of real estate investment property | a			11.9
Disposal Group, Including Discontinued Operation, Consideration			$ 4,750
Gain on sale of non-operating real estate			$ 446
Ettie Business Center
Real Estate Properties Sold and Held for Sale [Line Items]
Size (square feet) | ft²			29,000
Date sold			Nov. 20, 2023
Net sales price			$ 11,638
Real estate, net			8,845
Recognized gain			$ 2,793
Los Angeles Corporate Center
Real Estate Properties Sold and Held for Sale [Line Items]
Size (square feet) | ft²			77,000
Date sold			Dec. 29, 2023
Net sales price			$ 16,006
Real estate, net			5,643
Recognized gain			$ 10,363
Interchange Business Park and Metro Airport Commerce Center [Member]
Real Estate Properties Sold and Held for Sale [Line Items]
Size (square feet) | ft²	159,000
Date sold	Mar. 05, 2024
Net sales price	$ 13,614
Real estate, net	4,863
Recognized gain	$ 8,751
2024 development land dispositions
Real Estate Properties Sold and Held for Sale [Line Items]
Acres of real estate investment property | a	3.9
Disposal Group, Including Discontinued Operation, Consideration	$ 4,000
Gain on sale of non-operating real estate	$ 222