OTHER INCOME, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income and Expenses [Abstract]
Interest income, net	$ 191	$ 3,743	$ 2,297	$ 8,117
Transaction gain (loss) on foreign exchange	8	(3)	(60)	113
Other non-operating income, net	296	151	641	352
Other income, net	$ 495	$ 3,891	$ 2,878	$ 8,582