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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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Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost.

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Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement.

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