Annual report pursuant to Section 13 and 15(d)

Financial instruments - Cash Equivalents and Short-term Deposits (Details)

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Financial instruments - Cash Equivalents and Short-term Deposits (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Financial instruments    
Cash and cash equivalents $ 149,948 $ 56,882
Marketable securities 219,632  
Restricted cash $ 1,718