Income Taxes (Income from Operations) (Details 1) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income (Loss) from Continuing Operations before Income Taxes [Abstract]
U.S.									$ 257,312	$ 134,276	$ 227,457
Non-U.S.									66,196	48,513	23,201
Income Before Income Taxes	$ 69,138	$ 135,070	$ 62,735	$ 56,565	$ 54,860	$ 38,244	$ 65,899	$ 23,786	$ 323,508	$ 182,789	$ 250,658

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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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.

+ References

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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