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Business Segments and Major Customers (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Major Customer Disclosure
Revenues	$ 62,863	$ 62,527
South Korea
Major Customer Disclosure
Revenues	23,247	19,144
Japan
Major Customer Disclosure
Revenues	17,569	29,601
United States
Major Customer Disclosure
Revenues	16,189	13,499
Canada
Major Customer Disclosure
Revenues	1,979	128
Europe
Major Customer Disclosure
Revenues	1,129	7
Asia-Other
Major Customer Disclosure
Revenues	$ 2,750	$ 148

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X

- 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 SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



Reference 2: 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

+ Details

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