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Segment, Product and Geographic Information - Revenue from contracts with customers (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Segment, Product and Geographic Information    
Contract liabilities-current $ 37,663 $ 6,622
Contract liabilities-non-current 10,221 $ 0
Revenue that was included in contract liability balance at beginning of period $ 6,146