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Net Income (Loss) Per Share	9 Months Ended
Net Income (Loss) Per Share	Oct. 02, 2011
Earnings Per Share [Abstract]
Earnings Per Share	Net Income (Loss) Per Share Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share was computed using the weighted average number of common shares outstanding during the period plus potentially dilutive common shares outstanding during the period under the treasury stock method. In computing diluted net income (loss) per share, the weighted average stock price for the period is used in determining the number of shares assumed to be purchased from the exercise of stock options and warrants. For the third quarter and the first nine months of 2011, 7.2 million common shares associated with equity awards outstanding and the estimated number of shares to be purchased under the current offering period of the 2009 Employee Stock Purchase Plan were not included in the calculation of diluted net income (loss) per share, as they were considered antidilutive due to the net loss the Company experienced during these periods. For the third quarter and the first nine months of 2010, options for the purchase of 617,000 common shares, respectively, were excluded from the weighted average diluted shares outstanding calculation, because their effect was anti-dilutive.