The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

Stockholders' Equity and Equity Incentive Plans - Option Activity (Details) - Equity Incentive Plans - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022
Number of Shares
Beginning balance (in shares)			15,928,000
Options granted (in shares)	0	0	0	0
Options exercised (in shares)			(3,213,000)
Options cancelled (in shares)			(1,000,000)
Ending balance (in shares)	11,715,000		11,715,000		15,928,000
Options exercisable (in shares)	10,969,000		10,969,000
Weighted Average Exercise Price
Beginning balance (in dollars per share)			$ 4.20
Options granted (in dollars per share)			0
Options exercised (in dollars per share)			3.53
Options cancelled (in dollars per share)			9.15
Ending balance (in dollars per share)	$ 3.96		3.96		$ 4.20
Options exercisable (in dollars per share)	$ 3.63		$ 3.63
Options outstanding, weighted average remaining contractual term			5 years		5 years 10 months 24 days
Options exercisable, weighted average remaining contractual term			4 years 10 months 24 days
Options outstanding, aggregate intrinsic value	$ 48,225		$ 48,225		$ 123,382
Options exercisable, aggregate intrinsic value	$ 44,709		$ 44,709