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Business Segments and Major Customers (Details 3) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Major Customer Disclosure |  |  |  |
Revenues | $ 57,530 | $ 100,263 | $ 176,608 | $ 229,004
South Korea |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | 21,648 | 24,641 | 66,363 | 68,859
Japan |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | 17,347 | 19,899 | 50,818 | 76,149
United States |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | 14,309 | 42,096 | 45,778 | 69,897
Canada |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | 1,983 | 12,463 | 5,835 | 12,758
Asia-Other |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | 750 | 167 | 4,250 | 330
Europe |  |  |  |
Major Customer Disclosure |  |  |  |
Revenues | $ 1,493 | $ 997 | $ 3,564 | $ 1,011

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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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