Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
ESPP
Stockholders Equity Note Disclosure [Line Items]
Number of shares of common stock issued under ESPP	0.2	0.2
Weighted-average purchase price of shares of common stock under ESPP	$ 10.22	$ 9.98
Stock Options
Stockholders Equity Note Disclosure [Line Items]
Aggregate intrinsic value of vested options exercised	$ 1.2	$ 1.1
Weighted-average grant date fair value of options granted	$ 7.89	$ 4.72