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Balance Sheet Components (Schedule Of Estimated Amortization Expense Related To Intangibles) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]    
2019 $ 7,042  
2020 6,205  
2021 2,044  
2022 527  
2023 514  
Thereafter 814  
Total estimated amortization expense $ 17,146 $ 20,640