Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Incentive Compensation Plans (Details) (Weighted-average Valuation Assumptions)

v2.4.0.8
Stock-Based Incentive Compensation Plans (Details) (Weighted-average Valuation Assumptions)
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected volatility 57.98% 54.81% 58.71% 53.04%
Risk-free interest rate 1.05% 0.57% 0.75% 0.55%
Expected dividends 0.00% 0.00% 0.00% 0.00%
Expected life (in years) 3 years 10 months 0 days 3 years 9 months 15 days 3 years 10 months 0 days 3 years 9 months 15 days
Performance-based RSUs
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected volatility 57.46%      
Risk-free interest rate 0.20%      
Expected dividends 0.00%      
Expected life (in years) 1 year 5 months 10 days