EQUITY - Summary of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total equity	$ 3,437,249	$ 1,015,609	$ 1,053,876	$ 941,823
Total accumulated other comprehensive loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total equity	11,289	(1,798)	$ (7,333)	$ (1,542)
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total equity	(2,913)	(3,067)
Unrealized gains on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total equity	$ 14,202	$ 1,269