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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Tax reconciliation disclosures        
Loss before income taxes $ (11,695) $ (8,652) $ (45,455) $ (290,368)
Income tax expense (benefit) 72 $ 301 407 (27,954)
Domestic        
Tax reconciliation disclosures        
Income tax expense (benefit) $ 100   200 (1,100)
Foreign tax        
Tax reconciliation disclosures        
Income tax expense (benefit)     $ 200 $ (26,900)