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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Payables And Accruals [Abstract]    
Employees benefits $ 712 $ 496
Professional services 174 292
Legal expense 23 133
Royalty fees 10 12
Franchise fees 193  
Severance 258 347
Other 63 57
Total $ 1,433 $ 1,337