Shareholders' Equity - 2018 Plan and 2018 Employee Stock Purchase Plan (Details)	3 Months Ended
	Apr. 30, 2024 shares
2018 Plan
Share-based compensation
Balance at beginning of period (in shares)	18,985,254
Authorized (in shares)	6,844,200
Granted (in shares)	(727,277)
Forfeited or canceled (in shares)	512,682
Balance at end of period (in shares)	25,614,859
ESPP
Share-based compensation
Balance at beginning of period (in shares)	5,572,546
Authorized (in shares)	1,368,840
Granted (in shares)	0
Forfeited or canceled (in shares)	0
Balance at end of period (in shares)	6,941,386