Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense/(benefit)	$ 4,200	$ (4,453)
Effective tax rate, current income tax expense (benefit)	22.10%	(23.70%)
Excess tax benefits, stock awards	$ 1,015	$ 4,827
Measurement period adjustment, transition tax increase (decrease)		$ (4,836)

Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

+ References

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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