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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Advance payments received under joint development agreements $ 1,197 $ 1,978
Accruals for construction of property and equipment 684 71
Income taxes payable 389 226
Accrued professional services 398 1,099
Other 3,454 2,899
Accrued expenses and other current liabilities $ 6,122 $ 6,273