IDENTIFIED INTANGIBLE ASSETS AND LIABILITIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Identified intangible assets, net of accumulated amortization	$ 59,810		$ 48,121
Identified intangible liabilities, net of accumulated amortization	130,840		$ 128,830
Amortization of acquired below-market leases, net of above-market leases	2,200	$ 2,400
Amortization expense of intangible assets	$ 2,000	$ 2,100