Stock-based compensation (Narrative) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Jul. 22, 2025 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Jun. 30, 2025 |
Dec. 17, 2024 |
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| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||||||
| Limit of options as a percentage of shares outstanding | 10.00% | ||||||
| Weighted average grant-date fair value of options granted | $ 2.28 | ||||||
| Unrecognized stock-based compensation | $ 1,362,894 | $ 1,362,894 | |||||
| Period for recognition | 9 months 21 days | ||||||
| Stock-based compensation | $ 852,757 | $ 0 | $ 1,082,482 | $ 621,395 | |||
| Number of accelerated vesting | 100,000 | ||||||
| Remaining expense for accelerated share options | $ 663,998 | ||||||
| Tranche one [Member] | |||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||||||
| Number of shares available for grant | 210,000 | ||||||
| Tranche two [Member] | |||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |||||||
| Number of shares available for grant | 100,000 | ||||||
| X | ||||||||||
- Definition Limit of options as a percentage of shares outstanding No definition available.
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| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- 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/2003/role/disclosureRef
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| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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- Details
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