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Share-based Compensation Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 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)			3 months 29 days
Unrecognized compensation cost	$ 0.0		$ 0.0
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)			10 months 6 days
Granted (in shares)			106,793
Unrecorded compensation expense	$ 2.5		$ 2.5
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)			3,254
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
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved (in shares)	300,504		300,504
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]
Forfeited (in shares)						331,370
Granted (in shares)						132,546
Stock option modification, incremental compensation expense	$ 0.3	$ 0.4	$ 0.7	$ 0.8
Option Exchange Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecorded compensation expense	$ 0.0		$ 0.0