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Segments and Major Customers (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Major Customer Disclosure
Revenues	$ 76,501	$ 72,812	$ 149,183	$ 145,726
South Korea
Major Customer Disclosure
Revenues	31,632	26,821	63,086	53,642
USA
Major Customer Disclosure
Revenues	26,532	29,677	51,776	57,384
Japan
Major Customer Disclosure
Revenues	5,911	7,915	10,898	16,406
Europe
Major Customer Disclosure
Revenues	4,377	1,540	8,189	6,715
Canada
Major Customer Disclosure
Revenues	1,168	5	1,382	201
SINGAPORE
Major Customer Disclosure
Revenues	4,526	5,010	9,145	7,820
Asia-Other
Major Customer Disclosure
Revenues	$ 2,355	$ 1,844	$ 4,707	$ 3,558

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ 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=26872669&loc=d3e20235-122688

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