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Supplemental Balance Sheet Disclosures - Accrued Expenses (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Accrued Expenses |  |
Employees benefits | $ 437 | $ 712
Professional services | 16 | 174
Legal fees | 14 | 23
Royalty fees | 8 | 10
Franchise fees | 30 | 193
Severance |  | 258
Other | 46 | 63
Total | $ 551 | $ 1,433

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