SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2019 a	Dec. 31, 2021 Integer	Dec. 31, 2020 Integer
Controlling interest joint ventures & equity method investees
Percentage of assets, liabilities, revenues, and expenses of the buildings held in joint ventures with the noncontrolling interests		100.00%
Number of joint venture agreements | Integer			2
Speed Distribution Center
Controlling interest joint ventures & equity method investees
Square feet of property developed | Integer		519,000
University Business Center 120 [Member]
Controlling interest joint ventures & equity method investees
Less Than Wholly Owned Joint Venture Investment Ownership Percentage			80.00%
Industry Distribution Center II - undivided tenant-in-common interest [Member]
Controlling interest joint ventures & equity method investees
Tenant-in-common interest in Industry Distribution Center II (in hundredths)		50.00%
Real Estate Properties [Domain] | Miramar Land [Member]
Controlling interest joint ventures & equity method investees
Size (in acres) of land | a	6.5
Less Than Wholly Owned Joint Venture Investment Ownership Percentage		95.00%	95.00%
Real Estate Properties [Domain] | Otay Mesa Land
Controlling interest joint ventures & equity method investees
Size (in acres) of land | a	41.6
Less Than Wholly Owned Joint Venture Investment Ownership Percentage		99.00%	99.00%