Common stock (Details)	Mar. 31, 2026 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	7,322,516
Common Stock Warrants [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	1,947,853
2013 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	1,611,890
2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	3,673,015
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	89,758

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