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Segments and Major Customers (Details 3) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Major Customer Disclosure |  |
Revenues | $ 66,866 | $ 62,863
United States |  |
Major Customer Disclosure |  |
Revenues | 25,569 | 16,189
South Korea |  |
Major Customer Disclosure |  |
Revenues | 22,025 | 23,247
Japan |  |
Major Customer Disclosure |  |
Revenues | 14,609 | 17,569
Europe |  |
Major Customer Disclosure |  |
Revenues | 2,127 | 1,129
Canada |  |
Major Customer Disclosure |  |
Revenues | 1,786 | 1,979
Asia-Other |  |
Major Customer Disclosure |  |
Revenues | $ 750 | $ 2,750

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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=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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