Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax provision	$ 258	$ 128	$ 466	$ 461
Net loss before income taxes	$ 66,973	$ 50,060	$ 155,038	$ 72,075
Effective income tax rate	(0.40%)	(0.30%)	(0.30%)	(0.60%)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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