Equity-based compensation - Schedule of Stock - Based Compensation by Type of Award (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	$ 12,113	$ 16,550	$ 26,009	$ 34,107
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	5,378	9,466	12,842	19,057
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	4,489	4,271	8,814	8,626
Liability awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	2,134	2,590	4,010	5,926
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	$ 112	$ 223	$ 343	$ 498

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details