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Fair Value Measurements (Details)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2023
USD ($)
$ / shares
shares
Jul. 31, 2022
USD ($)
Jul. 31, 2023
USD ($)
$ / shares
shares
Jul. 31, 2022
USD ($)
Fair Value Measurements        
Equity derivatives, number of common shares held (in shares) | shares 308,427   308,427  
Derivative, common shares weighted average price (in dollars per share) | $ / shares $ 35.79   $ 35.79  
Minimum | Revenue growth rate        
Fair Value Measurements        
Estimated fair value consideration percentage 10   10  
Minimum | Discount rate        
Fair Value Measurements        
Estimated fair value consideration percentage 10   10  
Maximum | Revenue growth rate        
Fair Value Measurements        
Estimated fair value consideration percentage 12   12  
Maximum | Discount rate        
Fair Value Measurements        
Estimated fair value consideration percentage 12   12  
General and administrative expenses        
Fair Value Measurements        
Expense (recovery) | $ $ 1.0 $ (1.9) $ (1.2) $ 0.6