Deferred consideration - Schedule of Carrying Amount for the Reporting Periods (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Contingent Consideration [Roll Forward] | ||||
| Beginning balance | $ 28,755,957 | $ 0 | $ 25,734,073 | $ 0 |
| Additions | 25,065,957 | 25,065,957 | ||
| Fair value reassessment | (3,021,884) | 3,690,000 | (5,486,804) | 3,690,000 |
| Ending balance | $ 25,734,073 | $ 28,755,957 | $ 20,247,269 | $ 28,755,957 |