Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Share-Based Compensation (Details)

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Stockholders' Equity and Share-Based Compensation (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 29, 2013
Dec. 29, 2012
Summary of stock option activity    
Options outstanding, Shares, Beginning 7,428  
Granted - Shares 30  
Exercised - Shares (17)  
Expired - Shares (77)  
Forfeited - Shares (174)  
Options outstanding, Shares, Ending 7,190 7,428
Vested and expected to vest, Shares, Ending 6,986  
Options exercisable, Shares, Ending 6,099  
Options Outstanding, Weighted Average Exercise Price, Beginning $ 5.13  
Granted - Weighted Average Exercise Price $ 1.28  
Exercised - Weighted Average Exercise Price $ 1.31  
Expired - Weighted Average Exercise Price $ 4.71  
Forfeited - Weighted Average Exercise Price $ 3.31  
Options Outstanding, Weighted Average Exercise Price, Ending $ 5.17 $ 5.13
Vested and expected to vest, Weighted Average Exercise Price, Ending $ 5.20  
Options exercisable, Weighted Average Exercise Price, Ending $ 5.19  
Options Outstanding, Weighted Average Remaining Contractual Term (in years), Beginning 5 years 7 months 17 days 6 years 2 months 23 days
Options Outstanding, Weighted Average Remaining Contractual Term (in years), Ending 5 years 7 months 17 days 6 years 2 months 23 days
Vested and expected to vest, Weighted Average Remaining Contractual Term (in years), Ending 5 years 6 months 15 days  
Options exercisable, Weighted Average Remaining Contractual Term (in years), Ending 5 years 1 month 21 days  
Options outstanding, Aggregate Intrinsic Value, Ending     
Vested and expected to vest, Aggregate Intrinsic Value, Ending     
Options exercisable, Aggregate Intrinsic Value, Ending