SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Geograpic Net Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue by Geography
TOTAL NET REVENUES	$ 104,688	$ 88,036
United States of America
Revenue by Geography
TOTAL NET REVENUES	3,829	3,608
Hong Kong/China
Revenue by Geography
TOTAL NET REVENUES	54,845	43,342
Taiwan
Revenue by Geography
TOTAL NET REVENUES	13,034	10,399
Korea
Revenue by Geography
TOTAL NET REVENUES	9,506	9,673
Western Europe (excluding Germany)
Revenue by Geography
TOTAL NET REVENUES	11,971	10,711
Japan
Revenue by Geography
TOTAL NET REVENUES	4,648	4,808
Germany
Revenue by Geography
TOTAL NET REVENUES	2,796	2,099
Other
Revenue by Geography
TOTAL NET REVENUES	$ 4,059	$ 3,396