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Other Current Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepayments to suppliers $ 12,840 $ 9,640
Other debtors 4,272 9,259
Prepaid expenses 28,348 15,283
Net book value at end of period $ 45,460 $ 34,182