Summary of significant accounting policies - Principles of consolidation and Restricted cash (Details) |
3 Months Ended | ||
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Mar. 31, 2026
USD ($)
segment
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Dec. 31, 2025
USD ($)
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Mar. 31, 2025
USD ($)
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| Summary of significant accounting policies | |||
| Number of reportable segments | segment | 1 | ||
| Restricted cash | $ | $ 41,406 | $ 41,186 | $ 40,418 |
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- References No definition available.
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| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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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