Income Taxes (Net operating loss carryforwards) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loss Carryforwards and other details [Abstract]
Undistributed earnings of foreign subsidiaries	$ 1,100,000
U.S. Federal
Loss Carryforwards and other details [Abstract]
Operating loss carryforwards	25,272	$ 220,445
U.S. State
Loss Carryforwards and other details [Abstract]
Operating loss carryforwards	108,011	121,095
Foreign
Loss Carryforwards and other details [Abstract]
Operating loss carryforwards	$ 10,686	$ 2,967

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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