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		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Numerator:
Net income	$ 13,445	$ 20,496	$ 21,639	$ 37,718
Accretion and dividend on series A convertible preferred stock	(4,312)	(4,310)	(8,540)	(8,550)
Undistributed earnings attributable to preferred stockholders	(1,036)	(1,845)	(1,488)	(3,313)
Net income attributable to common stockholders	8,097	14,341	11,611	25,855
Net income attributable to common stockholders, diluted	$ 8,097	$ 14,341	$ 11,611	$ 25,855
Denominator:
Weighted-average number of shares used to compute net income per share attributable to common stockholders, basic	144,896	144,070	144,669	144,678
Dilutive effect of awards issued under employee equity plans	4,345	2,098	4,004	2,395
Dilutive effect of shares related to the convertible senior notes	1,861	357	1,696	561
Weighted-average number of shares used to compute net income per share attributable to common stockholders, diluted	151,102	146,525	150,369	147,634
Net income per share attributable to common stockholders, basic	$ 0.06	$ 0.1	$ 0.08	$ 0.18
Net income per share attributable to common stockholders, diluted	$ 0.05	$ 0.1	$ 0.08	$ 0.18