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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
May 12, 2020
Income Tax Disclosure [Abstract]          
Income tax provision $ 217 $ 223 $ 193 $ 793  
Debt Instrument [Line Items]          
Income tax provision $ 217 $ 223 $ 193 $ 793  
2025 Notes | Convertible Debt          
Debt Instrument [Line Items]          
Debt face amount issued         $ 180,400