SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ACCOUNTING POLICIES (Details 5) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Real Estate Properties
Indirect leasing costs		$ 546	$ 700	$ 661
Lease income - operating leases		364,957	306,658	271,094
Variable lease income	[1]	121,860	102,754	91,575
Income from real estate operations		486,817	409,412	$ 362,669
Operating Leases, Future Minimum Payments Receivable, Current		390,062
Operating Leases, Future Minimum Payments Receivable, in Two Years		355,906
Operating Leases, Future Minimum Payments Receivable, in Three Years		300,660
Operating Leases, Future Minimum Payments Receivable, in Four Years		237,066
Operating Leases, Future Minimum Payments Receivable, in Five Years		159,994
Operating Leases, Future Minimum Payments Receivable, Thereafter		383,192
Operating Leases, Future Minimum Payments Receivable		1,826,880
Right of use assets - Office Leases		$ 2,050	$ 1,984

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