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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

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