Common stock (Details)	Mar. 31, 2025 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of Common stock reserved for issuance	75,282,275
Conversion Of Common Stock Warrants [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of Common stock reserved for issuance	19,789,379
2013 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of Common stock reserved for issuance	17,278,905
2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of Common stock reserved for issuance	37,504,358
Outside of 2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of Common stock reserved for issuance	709,633

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