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Grant Expense, Net (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
grant
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Other Income and Expenses [Abstract]      
Number of grants approved | grant 2    
Grants approval amount $ 7,000    
Grant expense, net 173 $ 8  
Grant income 26 329  
Grant costs 199 337  
Grant payments received 0 $ 0  
Grants receivable, current $ 1,046   $ 1,020