Income Taxes (Schedule of Components of Continuing Operations Before Income Tax, Income Tax Expense, Effective Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Loss from continuing operations before income tax	$ (1,709)	$ (482,247)
Income tax expense	$ 10,903	$ 15,491
Effective tax rate	(638.00%)	(3.20%)

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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