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Debt - Additional Information (Detail) - Third Amended Credit Agreement - USD ($)
6 Months Ended
Jun. 10, 2022
Jul. 31, 2022
Jul. 31, 2021
Line Of Credit Facility [Line Items]      
Line of credit outstanding   $ 0  
Stand-by letters of credit      
Line Of Credit Facility [Line Items]      
Letter of credit outstanding   12,168,000  
JPMorgan Chase Bank N. A. | Revolving Credit Facility      
Line Of Credit Facility [Line Items]      
Credit agreement initiation date Jun. 29, 2018    
Credit facility maturity date 2027-06    
Credit facility maximum borrowing capacity $ 350,000,000    
Additional line of credit facility $ 150,000,000    
Commitment fee percentage 0.20%    
Interest expense   $ 511,000 $ 520,000
JPMorgan Chase Bank N. A. | Revolving Credit Facility | Adjusted SOFR, CDOR,SONIA or EURIBOR | Minimum      
Line Of Credit Facility [Line Items]      
Applicable margin 1.125%    
JPMorgan Chase Bank N. A. | Revolving Credit Facility | Adjusted SOFR, CDOR,SONIA or EURIBOR | Maximum      
Line Of Credit Facility [Line Items]      
Applicable margin 1.375%    
JPMorgan Chase Bank N. A. | Revolving Credit Facility | Adjusted Bounce Rate | Minimum      
Line Of Credit Facility [Line Items]      
Applicable margin 0.125%    
JPMorgan Chase Bank N. A. | Revolving Credit Facility | Adjusted Bounce Rate | Maximum      
Line Of Credit Facility [Line Items]      
Applicable margin 0.375%