Equity Incentive Plans - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2018 shares	Oct. 31, 2025 USD ($) purchase_period tranche shares	Oct. 31, 2024 USD ($) shares	Oct. 31, 2025 USD ($) purchase_period tranche shares	Oct. 31, 2024 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (shares)		0	0	0	0
Options exercised, aggregate intrinsic value | $		$ 0.0	$ 0.0
Exercise of stock options (shares)		0	0
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Term of award				ten years
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)				3,616,127
Compensation cost not yet recognized | $		$ 62.5		$ 62.5
Recognition period for compensation cost not yet recognized				2 years 7 months 6 days
Restricted stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Service condition satisfaction period				3 years
Restricted stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				2 years
Service condition satisfaction period				4 years
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Granted (shares)				450,000
Number of tranches | tranche		4		4
Stock price, threshold average trading days				30 days
Award expiration period				4 years
PSUs | Tranche 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service condition satisfaction period				1 year
Granted (shares)				150,000
2018 Equity Incentive Plan (2018 Plan)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (shares)	3,500,000			1,972,705
Percentage of outstanding shares (percent)	5.00%
Common stock reserved for future issuance (shares)		1,926,096		1,926,096
Employee Stock Purchase Plan | Employee stock purchase program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (shares)	1,050,000			591,811
Percentage of outstanding shares (percent)	1.50%
Common stock reserved for future issuance (shares)		844,128		844,128
Compensation cost not yet recognized | $		$ 1.0		$ 1.0
Recognition period for compensation cost not yet recognized				10 months 24 days
Duration of overlapping offering periods				12 months
Number of purchase periods in each offering period | purchase_period		2		2
Duration of purchase periods				6 months
Share purchase price as percentage of fair value of common stock (percent)		25.00%		25.00%
Maximum annual contributions via payroll deductions (shares)				300
Percentage of eligible compensation (percent)				85.00%
Number of shares available for grant (shares)		184,555		184,555
Assumed increase in shares outstanding (percent)		1.50%		1.50%