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Patent Sale and License (Details) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Memory technology patents Item	Dec. 31, 2011 Sale of memory technology patents Memory technology patents	Dec. 31, 2011 Sale of memory technology patents Domestic memory technology patents Item	Dec. 31, 2011 Sale of memory technology patents Foreign memory technology patents Item
Patent Sale and License
Number of intangible assets sold				73		43	30
Cash consideration					$ 35,000,000
Gain on sale of assets					35,600,000
Net cash proceeds from sale of assets	630,000	3,437,000	34,831,000		35,000,000
Patent license recorded in connection with patent sale			780,000		800,000
Valuation of right to use patents					$ 800,000
Estimated useful life					7 years

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of gain (loss) on sale or disposal of intangible assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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The cash inflow from disposal of asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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