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Revolving Credit Facility (Details)
$ in Thousands
9 Months Ended
Apr. 15, 2021
USD ($)
bbl / agreement
Oct. 27, 2011
USD ($)
Oct. 30, 2021
USD ($)
Oct. 31, 2020
USD ($)
Revolving Line of Credit        
Borrowings under revolving credit facility     $ 0 $ 43,700
Line of Credit        
Revolving Line of Credit        
Term of credit facility   5 years    
Maximum borrowing capacity $ 75,000 $ 50,000    
Borrowing capacity, accordion feature 25,000      
Maximum borrowing capacity including accordion expansion $ 100,000      
Number of covenants | bbl / agreement 1      
Unused commitment fee (as a percent) 0.20%      
Line of Credit | Eurodollar Rate        
Revolving Line of Credit        
Increase pricing for loans (as a percent) 1.00%      
Line of Credit | Federal Funds Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 0.50%      
First interest rate | Line of Credit | Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 1.25%      
First interest rate | Line of Credit | Federal Funds or Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 0.25%      
Second interest rate | Line of Credit | Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 1.50%      
Second interest rate | Line of Credit | Federal Funds or Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 0.50%      
Third interest rate | Line of Credit | Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 1.75%      
Third interest rate | Line of Credit | Federal Funds or Eurodollar Rate        
Revolving Line of Credit        
Margin added to variable rate (as a percent) 0.75%