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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
Income Tax Expense (Benefit), Continuing Operations [Abstract]        
Benefit (provision) for income taxes $ (25) $ 395 $ (89) $ 1,230