Summary of significant accounting policies - Property and Equipment, Net (Details) |
Mar. 31, 2026 |
|---|---|
| Building | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 20 years |
| Leasehold Improvements | |
| Property, Plant and Equipment [Line Items] | |
| Estimated useful life | Useful Life, Shorter of Lease Term or Asset Utility [Member] |
| Machinery and equipment | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 3 years |
| Machinery and equipment | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 5 years |
| Furniture and fixtures | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 3 years |
| Furniture and fixtures | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 5 years |
| Vehicles | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 5 years |
| Molds | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 3 years |
| Molds | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Useful Life | 5 years |