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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Income Taxes |  |  |  |  |
Effective tax rate (as a percent) | 23.20% | 22.20% | 20.50% | 21.20% |
Tax benefit related to share-based compensation | $ 1,396 | $ 1,560 | $ 6,896 | $ 3,806 |
Net deferred tax liability | 169,800 |  | 169,800 |  |
Net long-term deferred tax assets | 4,358 |  | 4,358 |  | $ 4,259
Net long-term deferred tax liabilities | $ 174,229 |  | $ 174,229 |  | $ 175,263

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