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Share-based Compensation Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2022	Jan. 31, 2020
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost period for recognition (in years)	6 months
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				2 years
Unrecognized compensation cost period for recognition (in years)	1 year
Granted (in shares)	89,740
Unrecorded compensation expense	$ 3.6
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 0.0
Forfeited (in shares)	2,029
2019 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period (in years)						10 years
Award vesting period (in years)						4 years
2019 Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)						4 years
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved (in shares)	310,776
2021 Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)					4 years
2021 Plan \| Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year		1 year	1 year
2021 Plan \| Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	2 years		2 years	2 years
Option Exchange Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost				$ 0.8
Forfeited (in shares)				331,370
Granted (in shares)				132,546
Stock option modification, incremental compensation expense	$ 0.4	$ 0.4
Option Exchange Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecorded compensation expense	$ 0.3