GOODWILL (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)
Goodwill [Abstract]
Number of segments | Segment	7
Goodwill	$ 187,423	$ 114,954
Mainland China [Member]
Goodwill [Abstract]
Goodwill	32,179	32,179
Americas/Pacific [Member]
Goodwill [Abstract]
Goodwill	9,449	9,449
South Korea [Member]
Goodwill [Abstract]
Goodwill	29,261	29,261
Southeast Asia [Member]
Goodwill [Abstract]
Goodwill	18,537	18,537
Japan [Member]
Goodwill [Abstract]
Goodwill	16,019	16,019
Hong Kong/Taiwan [Member]
Goodwill [Abstract]
Goodwill	6,634	6,634
EMEA [Member]
Goodwill [Abstract]
Goodwill	2,875	2,875
Other [Member]
Goodwill [Abstract]
Goodwill	$ 72,469	$ 0