Common stock (Details)	Jun. 30, 2026 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	18,319,346
Tranche 2 Institutional Placement, subject to shareholder approval [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	9,210,757
Common Stock Warrants [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	1,944,214
2013 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	1,594,564
Amended 2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shares of common stock reserved for issuance	5,411,631
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	158,180

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