OTHER NON-CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Operating lease liabilities	$ 19,707	$ 28,800	$ 0
Income tax liabilities	10,935		7,069
Deferred revenue	88		19
Other non-current liabilities	286		2,090
Total	$ 31,016		$ 9,178