Quarterly report pursuant to Section 13 or 15(d)

Stock Incentive Plans - Summary of Fair Value Assumptions and Stock-Based Compensation Activity (Details)

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Stock Incentive Plans - Summary of Fair Value Assumptions and Stock-Based Compensation Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 9 Months Ended
Oct. 02, 2016
Oct. 04, 2015
Oct. 02, 2016
Oct. 04, 2015
Stock-based compensation expense recognized        
Stock-based compensation expense $ 0.5 $ 1.2 $ 3.6 $ 4.0
Stock Options        
Weighted average assumptions used in estimation of fair value of options        
Risk-free interest rate (as a percent) 0.80%   1.20% 1.40%
Expected years until exercise 3 years   4 years 6 months 4 years 9 months 18 days
Expected stock volatility (as a percent) 38.80%   39.20% 40.60%
Dividend yield (as a percent) 0.00%   0.00% 0.00%
Weighted average Black-Scholes fair value per share at date of grant (in dollars per share) $ 13.82   $ 21.24 $ 29.71
Stock Options        
Outstanding, Beginning of period (in shares)     395  
Granted (in shares)     142  
Forfeited/expired (in shares)     (40)  
Exercised/vested (in shares)     (19)  
Outstanding, End of period (in shares) 478   478  
Restricted Stock Units        
Restricted Stock Units        
Outstanding, Beginning of period (in shares)     75  
Granted (in shares)     58  
Forfeited/expired (in shares)     (11)  
Exercised/vested (in shares)     (36)  
Outstanding, End of period (in shares) 86   86