DEBT - Summary of Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt Disclosure [Abstract]
Contractual interest	$ 31,753	$ 28,765	$ 63,079	$ 57,482
Amortization of deferred financing costs and debt discount	2,077	1,996	4,129	3,993
Other costs	59	405	352	806
Interest income	(268)	(1,400)	(1,254)	(2,911)
Total	33,621	29,766	66,306	59,370
Interest costs capitalized	$ 700	$ 400	$ 1,643	$ 751