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Stockholders' Equity (Details 2)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Weighted average assumptions for fair value of options granted
Average risk free interest rate	0.68%	0.98%	2.03%
Expected life (in years)	4 years 6 months 18 days	4 years 8 months 12 days	4 years 9 months
Dividend yield	0.00%	0.00%	0.00%
Average volatility	89.20%	92.20%	82.20%

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.

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