Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Deferred Grant Income (Details)

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Deferred Grant Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Deferred Grants [Roll Forward]    
Deferred grant income beginning balance $ 7,488 $ 0
Grants related to prior years 0 3,173
Grants received in 2020 2,769 4,315
Grant income recognized (1,959) 0
Adjustment, net 146 0
Deferred grant income endingng balance $ 8,444 $ 7,488