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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Payables And Accruals [Abstract] |  |
Employees benefits | $ 496 | $ 722
Professional services | 292 | 67
Legal expense | 133 | 81
Royalty fees | 12 | 13
Franchise fees |  | 28
Severance | 347 | 606
Other | 57 | 2
Total accrued expenses | $ 1,337 | $ 1,519

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