Long-Term Debt - Schedule of Future Minimum Principal and Interest Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
2022 (nine months remaining)	$ 340
2023	452
2024	2,194
2025	5,523
2026 and thereafter	3,976
Total future minimum payments	12,486
Less: interest, Issuance cost and Final Payment Fee	1,986
Debt Instrument, Face Amount	10,500
Debt Issuance Costs, Net, Total	559	$ 600
Total long-term debt, net	$ 9,941	$ 9,904

Interest and Final Payment Fee.

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Face (par) amount of debt instrument at time of issuance.

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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, 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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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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