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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Income Tax Contingency [Line Items] |  |  |  |  |
Effective tax rate (benefit) expense |  |  | 50.10% | (74.40%) |
Estimated annual effective tax benefit rate |  |  | 25.30% | 19.70% |
Discrete tax expense |  |  | $ 3,100 |  |
Discrete net benefits | $ 178 | $ 21,143 | (3,007) | $ 25,001 |
Income taxes paid, including foreign withholding taxes |  |  | 16,483 | 24,459 |
Taxes payable | $ 193 |  | 193 |  | $ 1,508
Share-based Payment Arrangement |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Discrete net benefits |  |  |  | 18,400 |
Foreign Country |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Income taxes paid, including foreign withholding taxes |  |  | $ 11,500 | $ 16,500 |

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