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Earnings Per Share - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) shares | Jun. 30, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Ownership percentage in equity method investment | 25.00% | 25.00%
Long-term equity-based compensation expense | $ | $ 19,654 | $ 19,654
Restricted Stock Units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Accelerated vesting of equity instruments (in shares) | 473,126 |
Performance Share Units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Accelerated vesting of equity instruments (in shares) | 903,100 |

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