OTHER NON-CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Operating lease liabilities	$ 10,846	$ 12,281
Income tax liabilities	12,392	12,414
Deferred revenue	373	504
Other non-current liabilities	43	40
Total	$ 23,654	$ 25,239