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FINANCIAL STATEMENT DETAILS - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 321,900 $ 110,011 $ 1,939 $ 985
Restricted cash included in other current assets 445 26 24 23
Total cash and cash equivalents and restricted cash as shown on the consolidated statement of cash flows $ 322,345 $ 110,037 $ 1,963 $ 1,008