Debt - Summary of the Carrying Values of the Loan Agreement Borrowings (Details) - EB-5 Loan Agreement - Loans payable - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal outstanding	$ 1,500	$ 1,500
Plus: accrued interest	256	241
Less: unamortized debt issuance costs	(25)	(29)
Carrying value, net	$ 1,731	$ 1,712

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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