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Long-Term Debt and Short-Term Borrowings - Additional Informations (Details)
12 Months Ended
Sep. 17, 2020
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
Dec. 26, 2019
USD ($)
Dec. 27, 2018
USD ($)
Sep. 22, 2020
Debt Instrument [Line Items]          
Capped call transactions   $ 16,908,000 $ 0 $ 0  
Threshold percentage of conversion price on each applicable trading day   130.00%      
Initial conversion premium 100.00%        
Last reported sale price | $ / shares $ 8.99        
Cap price of capped call transactions | $ / shares 17.98        
Strike price of capped call transactions | $ / shares $ 11.0128        
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Face amount   $ 225,000,000      
Line of Credit Facility, Remaining Borrowing Capacity   220,000,000      
Convertible Senior Notes due 2025          
Debt Instrument [Line Items]          
Net proceeds from the sale of the Convertible Notes $ 95,421,000        
Capped call transactions 16,908,000        
Amortization of debt discount on convertible notes   $ 1,004,000      
Effective interest rate   11.25%      
Equity component of the Convertible Notes included in additional paid-in capital, before tax   $ 23,426,000      
Equity component of the Convertible Notes included in additional paid-in capital, net of tax and issuance costs   16,511,000      
Face amount $ 100,050,000 $ 1,000      
Interest rate 5.00%       5.00%
Threshold percentage of conversion price on each applicable trading day   98.00%      
Initial conversion rate 90.8038        
Initial conversion price | $ / shares $ 11.01        
Initial conversion premium 22.50%        
Last reported sale price | $ / shares $ 8.99        
Purchase price as a percentage of principal amount 100.00%