Annual report pursuant to Section 13 and 15(d)

Stock Incentive Plans Stock Incentive Plans - Summary of Time-Based RSUs and Performance Stock Units (Details)

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Stock Incentive Plans Stock Incentive Plans - Summary of Time-Based RSUs and Performance Stock Units (Details) - $ / shares
12 Months Ended
Dec. 27, 2020
Dec. 29, 2019
2017 and 2007 Performance Incentive Plans | Restricted Stock Units (RSUs) [Member]    
Shares    
Outstanding, Beginning of period (in shares) 218,000  
Awarded (in shares) 239,000  
Forfeited (in shares) (54,000)  
Vested (in shares) (56,000)  
Outstanding, End of period (in shares) 347,000 218,000
Weighted Average Grant-Date Fire Value (per share)    
Outstanding, beginning of period (in dollars per share) $ 35.62  
Awarded (in dollars per share) 12.98  
Forfeited (in dollars per share) 36.80  
Vested (in dollars per share) 36.45  
Outstanding, end of period (in dollars per share) $ 19.74 $ 35.62
Number of common shares issued per RSU or PSU (in shares) 1  
Share-Based Compensation Arrangement By Share-based Payment Award, Award Vesting Period, Number of Common Stock Issued Per Award 1  
Vesting period 4 years  
2017 Stock Plan | Performance Stock Units    
Shares    
Outstanding, Beginning of period (in shares) 102,000  
Awarded (in shares) 256,000  
Forfeited (in shares) (52,000)  
Vested (in shares) (9,000)  
Outstanding, End of period (in shares) 297,000 102,000
Weighted Average Grant-Date Fire Value (per share)    
Outstanding, beginning of period (in dollars per share) $ 36.23  
Awarded (in dollars per share) 18.09  
Forfeited (in dollars per share) 34.78  
Vested (in dollars per share) 49.03  
Outstanding, end of period (in dollars per share) $ 20.52 $ 36.23
Share-Based Compensation Arrangement By Share-based Payment Award, Award Vesting Period, Number of Common Stock Issued Per Award 1  
Vesting period 3 years 3 years