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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Jan. 31, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Net income $ 102,236 $ 86,282 $ 52,100
Weighted average shares outstanding (in shares) 84,791 84,591 84,360
Weighted average common and common equivalent shares outstanding (in shares) 86,451 86,200 85,756
Earning Per Share (Basic) $ 1.21 $ 1.02 $ 0.62
Earning Per Share (Diluted) $ 1.18 $ 1.00 $ 0.61
Share-based Payment Arrangement, Option [Member]      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Dilutive effect of employee stock options (in shares) 455 482 358
Restricted Stock Units (RSUs) [Member]      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Dilutive effect of employee stock options (in shares) 1,205 1,127 1,038