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 Nonoperating Income (Expense) [Abstract]
Interest income and gains on short-term investments, net	$ 1,018	$ 675	$ 2,846	$ 1,524
Foreign exchange loss, net	(92)	(4)	(414)	(370)
Other	30	(65)	34	(172)
Other income, net	$ 956	$ 606	$ 2,466	$ 982