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Stockholders' Equity and Stock-Based Compensation Stock Option Activity (Details) - $ / shares
 12 Months Ended
Feb. 25, 2016
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Dec. 29, 2012
Summary of stock option activity [Roll Forward]          
Options outstanding at the beginning of year (in shares)   850,732 696,176 906,251  
Options outstanding at the beginning of year, Weighted-average exercise price per share (in usd per share)   $ 15.38 $ 13.88 $ 9.97  
Granted (in shares)   1,547,184 422,386 163,078  
Granted, Weighted-average exercise price per share (in usd per share)   $ 9.53 $ 14.76 $ 19.94  
Exercised (in shares)   (28,000) (131,653) (343,550)  
Exercised, Weighted-average exercise price per share (in usd per share)   $ 6.71 $ 4.13 $ 6.18  
Forfeited (in shares)   (4,000) (136,177) (29,603)  
Forfeited, Weighted-average exercise price per share (in usd per share)   $ 16.20 $ 16.68 $ 16.89  
Expired (in shares)   0 0 0  
Expired, Weighted average exercise price per share (in usd per share)   $ 0.00 $ 0.00 $ 0.00  
Options outstanding at the end of year (in shares)   2,365,916 850,732 696,176  
Options outstanding at the end of year, Weighted-average exercise price per share (in usd per share)   $ 11.65 $ 15.38 $ 13.88  
Options outstanding, Weighted-average remaining contractual life (in years)   8 years 4 months 24 days 7 years 8 months 12 days 6 years 2 months 12 days 5 years
Options exercisable (in shares)   715,833      
Options exercisable, Weighted-average exercise price per share (in usd per share)   $ 15.18      
Options exercisable, Weighted-average remaining contractual life (in years)   6 years 9 months 18 days      
Nonqualified Stock Options Under Long Term Incentive Program [Member]          
Summary of stock option activity [Roll Forward]          
Granted (in shares) 1,094,306 452,878