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Other Income (Expense), Net (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Other Income (Expense), Net        
Income from government grants $ 0   $ 3,000  
Foreign exchange gain (loss) $ (135,000) $ 165,000 $ (126,000) $ 85,000