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Taxes, prepaid expenses and other current assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Prepaid insurance | $ 845 | $ 533
Prepaid expense | 711 | 648
Buckeye growth premiums receivable | 615 | 738
Income tax receivable | 149 | 149
ICFA receivable | 0 | 1,871
Other current assets | 28 | 141
Taxes, prepaid expenses and other current assets | $ 2,348 | $ 4,080

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