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Taxes, prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expense	$ 736	$ 648
Buckeye growth premiums receivable	609	738
Prepaid insurance	323	533
Income tax receivable	149	149
ICFA receivable	0	1,871
Other current assets	102	141
Taxes, prepaid expenses and other current assets	$ 1,919	$ 4,080

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Growth Premiums Receivable, Current

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ICFA Receivable, Current

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Amount of current assets classified as other.

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Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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