Summary of significant accounting policies - Schedule of Useful Lives by Major Asset Class (Details) |
Mar. 31, 2026 |
|---|---|
| Machinery, equipment and software | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 2 years |
| Machinery, equipment and software | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 5 years |
| Leasehold improvements | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 10 years |
| Furniture and fixtures | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 3 years |
| Furniture and fixtures | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 5 years |
| Store fixtures | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 1 year |
| Store fixtures | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives (in years) | 3 years |