SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ACCOUNTING POLICIES (Details 5) - USD ($)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate Properties [Line Items]
Indirect leasing costs		$ 700,000	$ 661,000	$ 411,000
Operating Lease, Lease Income		306,658,000	271,094,000	248,237,000
Operating Lease, Variable Lease Income	[1]	102,754,000	91,575,000	82,576,000
Income from real estate operations		409,412,000	362,669,000	$ 330,813,000
Operating Leases, Future Minimum Payments Receivable, Current		322,765,000
Operating Leases, Future Minimum Payments Receivable, in Two Years		291,810,000
Operating Leases, Future Minimum Payments Receivable, in Three Years		245,109,000
Operating Leases, Future Minimum Payments Receivable, in Four Years		195,340,000
Operating Leases, Future Minimum Payments Receivable, in Five Years		146,152,000
Operating Leases, Future Minimum Payments Receivable, Thereafter		313,050,000
Operating Leases, Future Minimum Payments Receivable		1,514,226,000
Right of use assets - Office Leases		1,984,000	2,131,000
Right-of-Use Assets - Ground Leases (operating)	[2]	$ 22,635,000	$ 11,073,000

[1] Primarily includes tenant reimbursements for real estate taxes, insurance and common area maintenance.

[2] See Ground Leases discussion below for information regarding the Company’s right of use assets for ground leases.