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Certain Balance Sheet Components - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]    
Raw materials $ 120,861 $ 133,398
Work in process 11,105 9,744
Finished goods 95,930 77,532
Total inventories $ 227,896 $ 220,674