Summary of significant accounting policies - Others (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2025
USD ($)
segment
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Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Summary of significant accounting policies | |||
| Inventory Write-down | $ 0 | ||
| Impairment of Long-lived Assets | |||
| Impairment loss of investments | 0 | $ 0 | $ 0 |
| Revenue recognition | |||
| Contract liabilities | $ 123 | 0 | |
| Operating lease term | 12 months | ||
| Segment reporting | |||
| Number of operating segments | segment | 1 | ||
| Advertising expenses | $ 0 | $ 0 | |
| Minimum | |||
| Revenue recognition | |||
| Operating lease term | 1 year | ||
| Maximum | |||
| Revenue recognition | |||
| Operating lease term | 3 years | ||
| X | ||||||||||
- Definition Disclosure of significant accounting policies No definition available.
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| X | ||||||||||
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. No definition available.
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| X | ||||||||||
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- References No definition available.
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- Details
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- Details
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