INTANGIBLES (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Intangible assets:
Lease intangible assets	$ 1,246,312		$ 1,308,077
Goodwill	1,050,742		1,051,161
Accumulated amortization	(943,809)		(922,668)
Net intangible assets	$ 1,389,041		1,472,408
Finite-lived intangible assets, remaining amortization period	10 years 3 months 18 days	10 years 2 months 12 days
Intangible liabilities:
Below market lease intangibles	$ 339,200		349,357
Other lease intangibles	13,498		13,498
Accumulated amortization	(208,959)		(203,834)
Purchase option intangibles	3,568		3,568
Net intangible liabilities	$ 147,307		162,589
Below market leases, remaining weighted average amortization period (in years)	14 years 3 months 18 days	14 years 6 months
Net intangible liabilities, remaining weighted average amortization period (in years)	14 years 3 months 18 days	14 years 6 months
Above Market Lease Intangibles
Intangible assets:
Lease intangible assets	$ 141,224		145,891
Finite-lived intangible assets, remaining amortization period	6 years 7 months 6 days	6 years 10 months 24 days
In-place and Other Lease Intangibles
Intangible assets:
Lease intangible assets	$ 1,105,088		1,162,187
Finite-lived intangible assets, remaining amortization period	10 years 8 months 12 days	10 years 7 months 6 days
Other Intangibles
Intangible assets:
Other intangibles	$ 35,796		$ 35,837
Finite-lived intangible assets, remaining amortization period	10 years 2 months 12 days	10 years 10 months 24 days