Summary of significant accounting policies - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Restricted cash | |||
| Restricted cash | $ 0 | $ 0 | |
| Trade receivables, net | |||
| Allowance for doubtful accounts | 3 | 243 | $ 0 |
| Write off of uncollectible accounts receivable | 184 | 0 | $ 0 |
| Other receivables and Prepayments | |||
| Allowance for uncollectible other receivables and prepayments | 109 | 10 | |
| Loan receivables, net | |||
| Allowance for loan receivables | 5,038 | 5,491 | |
| Contract Balances | |||
| Revenue recognized from beginning contract liability balance | $ 0 | $ 87 | |
| Long-term investment, net | |||
| Equity interest in HK Golden, Inc. | 19.90% | ||
| X | ||||||||||
- Definition Amount of direct write-downs of accounts receivable. No definition available.
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| X | ||||||||||
- Definition N/A. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Percentage of ownership of equity interest excluding interest in entity that is consolidated and equity method investee. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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