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Patent Sale and License (Details) (USD $)	12 Months Ended		1 Months Ended		12 Months Ended	1 Months Ended
	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 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	$ 35,000,000
Gain on sale of assets				35,600,000
Net cash proceeds from sale of assets	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	$ 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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The excess or deficiency of net proceeds from sale in the period compared to carrying value of intangible assets as of consummation date of the sale.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

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