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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Income Tax Contingency [Line Items] |  |  |  |  |
Annual effective tax rate |  |  | 30.10% | 24.60% |
Net tax expense on sale of intellectual property rights |  |  |  | $ 9,600 |
Discrete tax expense from transfer of shares |  |  | $ 500 |  |
Discrete tax benefit | $ (2,156) | $ (3,495) | 344 | (12,720) |
Unrecognized tax benefits | 17,600 |  | 17,600 |  | $ 16,800
Accrued interest and penalties | $ 1,200 |  | 1,200 |  | $ 1,000
Equity Compensation |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Discrete tax benefit |  |  | $ 4,200 | $ 8,100 |

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