EIB loan guaranty (Details) € in Millions	Mar. 31, 2024 USD ($)	Mar. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)
Short-Term Debt [Line Items]
Total obligations	$ 10,920,451		$ 10,873,867
Unamortized discount
Carrying value of EIB loan guaranty	10,920,451		10,873,867
Less EIB loan guaranty (current portion)	(10,920,451)		(10,873,867)
Long-term EIB loan guaranty
EIB [Member]
Short-Term Debt [Line Items]
Total obligations	$ 10,920,451	€ 10.1	$ 10,873,867

Amount, after accumulated amortization, of debt discount.

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