Income Taxes Effective Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax [Line Items]
Income tax expense (benefit)	$ (574)	$ (1,190)	$ 45,996	$ 19,831
Income (loss) before income taxes	$ (16,172)	$ 31,474	$ 171,532	$ 153,113
Effective tax rate	4.00%	(4.00%)	27.00%	13.00%

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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