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Debt - Additional Information (Detail) - USD ($)
12 Months Ended
Aug. 18, 2020
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Debt Instrument [Line Items]        
Debt Outstanding Excluding Capital Lease Obligations   $ 0 $ 0  
Interest paid   3,915,000 4,439,000 $ 3,761,000
Revolving Credit Facility        
Debt Instrument [Line Items]        
Credit facility, initiation date Aug. 18, 2020      
Credit facility, borrowing capacity   250,000,000    
Credit facility, maximum borrowing capacity   400,000,000    
Borrowings outstanding   $ 0 $ 0  
Credit facility, debt covenants compliance   The Company is currently in compliance with all of the debt covenants under the Credit Agreement.    
Revolving Credit Facility | Minimum        
Debt Instrument [Line Items]        
Credit facility, unused credit commitment fee   0.25%    
Credit facility event of default, minimum percentage that a person or group should acquire outstanding capital stock   35.00%    
Revolving Credit Facility | Minimum | Eurodollar [Member]        
Debt Instrument [Line Items]        
Borrowings, basis spread on variable rate   1.25%    
Revolving Credit Facility | Minimum | Base Rate [Member]        
Debt Instrument [Line Items]        
Borrowings, basis spread on variable rate   0.25%    
Revolving Credit Facility | Maximum        
Debt Instrument [Line Items]        
Credit facility, unused credit commitment fee   0.35%    
Maximum Leverage ratio beyond which amount of cash dividends and other distributions to stockholders is limited   250.00%    
Revolving Credit Facility | Maximum | Eurodollar [Member]        
Debt Instrument [Line Items]        
Borrowings, basis spread on variable rate   2.00%    
Revolving Credit Facility | Maximum | Base Rate [Member]        
Debt Instrument [Line Items]        
Borrowings, basis spread on variable rate   1.00%    
Letter of Credit        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   $ 35,000,000