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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
May 12, 2020
Income Tax Disclosure [Abstract]          
Income tax provision (benefit) $ (115) $ 322 $ (24) $ 570  
2025 Notes | Convertible Debt          
Debt Instrument [Line Items]          
Carrying amount of debt $ 180,375   $ 180,375   $ 180,400