OTHER INCOME, NET (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Income and Expenses [Abstract]
Interest income, net	$ 991	$ 478	$ 2,431	$ 1,203
Transaction gain (loss) on foreign exchange	323	(93)	377	(66)
Other non-operating income (loss), net	57	(58)	125	(185)
Other income, net	$ 1,371	$ 327	$ 2,933	$ 952