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Certain Balance Sheet Components - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
Raw materials $ 114,058 $ 120,861
Work in process 8,094 11,105
Finished goods 60,225 95,930
Total inventories $ 182,377 $ 227,896