LEASE REVENUE LEASE REVENUE (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Lease Revenue [Line Items]
Operating Lease, Lease Income, Lease Payments		$ 61,478,000		$ 120,370,000
Operating Lease, Variable Lease Income	[1]	20,305,000		40,050,000
Lease Income		81,783,000		160,420,000
Operating Leases, Future Minimum Payments Receivable, Current		121,751,000		121,751,000		$ 226,330,000
Operating Leases, Future Minimum Payments Receivable, in Two Years		225,332,000		225,332,000		195,850,000
Operating Leases, Future Minimum Payments Receivable, in Three Years		181,730,000		181,730,000		151,564,000
Operating Leases, Future Minimum Payments Receivable, in Four Years		138,451,000		138,451,000		112,007,000
Operating Leases, Future Minimum Payments Receivable, in Five Years		105,399,000		105,399,000		82,262,000
Operating Leases, Future Minimum Payments Receivable, Thereafter		216,156,000		216,156,000		163,499,000
Total minimum receipts		988,819,000		988,819,000		$ 931,512,000
Indirect leasing costs		$ 103,000	$ 0	$ 196,000	$ 0

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