Significant accounting policies - Property and equipment (Details) |
Dec. 31, 2025 |
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| Machinery and equipment | Minimum | |
| Significant accounting policies | |
| Estimated useful life | 3 years |
| Machinery and equipment | Maximum | |
| Significant accounting policies | |
| Estimated useful life | 5 years |
| Computers, software and hardware | Minimum | |
| Significant accounting policies | |
| Estimated useful life | 2 years |
| Computers, software and hardware | Maximum | |
| Significant accounting policies | |
| Estimated useful life | 3 years |
| Leasehold improvements | |
| Significant accounting policies | |
| Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] | us-gaap:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember |
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- Definition 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Useful life of property, plant, and equipment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Indicates description of term of useful life for property, plant, and equipment when not stated as numeric value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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