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Shareholders' Equity - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Jun. 04, 2019
Aug. 22, 2017
Equity, Class of Treasury Stock [Line Items]            
Common shares authorized for repurchase, shares         20,000,000 20,000,000
Remaining common shares authorized for repurchase, shares 19,156,390   19,156,390      
Stock repurchased and retired during period, total cost $ 169 $ 12 $ 8,353 $ 118,696    
Employee Stock            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchased and retired during period shares     308,649 246,034    
Stock repurchased and retired during period, total cost       $ 6,680