REAL ESTATE SOLD AND HELD FOR SALE DISCONTINUED OPERATIONS (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) ft²	Dec. 31, 2021 USD ($) ft²
Real Estate Properties Sold [Line Items]
Right of use liability, ground lease	$ 20,814	$ 22,898
2022 dispositions
Real Estate Properties Sold [Line Items]
Size (square feet) | ft²	245,000
Net sales price	$ 38,133
Basis	7,781
Recognized gain	$ 30,352
Metro Business Park | 2022 dispositions
Real Estate Properties Sold [Line Items]
Size (square feet) | ft²	189,000
Date sold	Jan. 06, 2022
Net sales price	$ 32,851
Basis	5,880
Recognized gain	$ 26,971
Cypress Creek Business Park | 2022 dispositions
Real Estate Properties Sold [Line Items]
Size (square feet) | ft²	56,000
Date sold	Mar. 31, 2022
Net sales price	$ 5,282
Basis	1,901
Recognized gain	3,381
Right of use asset, ground lease	1,745
Right of use liability, ground lease	$ 1,745
Jetport Commerce Park | 2021 dispositions
Real Estate Properties Sold [Line Items]
Size (square feet) | ft²		284,000
Date sold		Nov. 09, 2021
Net sales price		$ 44,260
Basis		5,401
Recognized gain		$ 38,859