OTHER INCOME, NET (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Interest income, net	$ 7	$ 2,830	$ 2,304	$ 10,946
Transaction gain (loss) on foreign exchange	28	(20)	(32)	93
Other non-operating income, net	364	253	1,005	606
Other income, net	$ 399	$ 3,063	$ 3,277	$ 11,645