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Segments and Major Customers (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Major Customer Disclosure
Revenues	$ 94,720	$ 76,501	$ 192,071	$ 149,183
South Korea
Major Customer Disclosure
Revenues	28,291	31,632	57,260	63,086
USA
Major Customer Disclosure
Revenues	41,155	26,532	79,593	51,776
Japan
Major Customer Disclosure
Revenues	7,057	5,911	13,575	10,898
Europe
Major Customer Disclosure
Revenues	4,243	4,377	8,681	8,189
Canada
Major Customer Disclosure
Revenues	1,352	1,168	2,420	1,382
SINGAPORE
Major Customer Disclosure
Revenues	4,889	4,526	12,636	9,145
Asia-Other
Major Customer Disclosure
Revenues	$ 7,733	$ 2,355	$ 17,906	$ 4,707

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+ References

No definition available.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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