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Income Taxes Income Taxes - Income (Loss) from Continuing Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
United States $ (18,088) $ 51,385 $ 3,293
Foreign 1,182 495 193
Income (loss) before income taxes $ (16,906) $ 51,880 $ 3,486