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Stock-based compensation - Narrative (Details) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Oct. 16, 2019 USD ($) shares | Sep. 30, 2025 USD ($) tranche plan shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of plans | plan |  | 2
Unrecognized compensation expense | $ |  | $ 12,214
Weighted-average period |  | 2 years
2019 Stock Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares reserved for future issuance (in shares) |  | 2,097,452
Equity Inducement Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares reserved for future issuance (in shares) |  | 167,474
Nonemployee | 2019 Stock Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum recipient award amount | $ | $ 120 |
Stock options | 2019 Stock Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum number of shares per employee (in shares) | 500,000 |
RSUs | 2019 Stock Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum number of shares per employee (in shares) | 250,000 |
RSUs | Equity Inducement Plan | Tranche one |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period |  | 5 years
Stock appreciation rights | 2019 Stock Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum number of shares per employee (in shares) | 500,000 |
PSUs | Equity Inducement Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of tranches | tranche |  | 10
Performance period |  | 5 years
PSUs | Equity Inducement Plan | Tranche one |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting percentage |  | 50.00%
PSUs | Equity Inducement Plan | Tranche two |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period |  | 1 year
Award vesting percentage |  | 50.00%

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