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Certain Balance Sheet Components - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Cash and Cash Equivalents [Line Items]    
Restricted cash $ 10,100 $ 2,987
Sunovion Pharmaceuticals, Inc.    
Cash and Cash Equivalents [Line Items]    
Restricted cash $ 7,100