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Net Income per Share Attributable to Common Stockholders - Summary of Computation of Basic and Diluted Net Income Per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Numerator:    
Net income $ 8,194 $ 17,222
Accretion and dividend on series A convertible preferred stock (4,228) (4,240)
Undistributed earnings attributable to preferred stockholders (451) (1,469)
Net income attributable to common stockholders 3,515 11,513
Net income attributable to common stockholders, diluted $ 3,515 $ 11,513
Denominator:    
Weighted-average number of shares used to compute net income per share attributable to common stockholders, basic 144,434 145,299
Dilutive effect of awards issued under employee equity plans 3,664 2,694
Dilutive effect of shares related to the convertible senior notes 1,516 764
Weighted-average number of shares used to compute net income per share attributable to common stockholders, diluted 149,614 148,757
Net income per share attributable to common stockholders, basic $ 0.02 $ 0.08
Net income per share attributable to common stockholders, diluted $ 0.02 $ 0.08