Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax benefits balance at January 1	$ 4,509	$ 4,183	$ 19,606
Increase in gross amounts of tax positions related to prior years	2,008	480	62
Decrease in gross amounts of tax positions related to prior years	(358)	(50)	(2,129)
Increase in gross amounts of tax positions related to current year			585
Decrease due to settlements with tax authorities	(1,626)	(381)	(14,029)
Decrease due to lapse in statute of limitations	(479)	(29)	(163)
Currency translation decrease	(264)
Currency translation increase		306	251
Unrecognized tax benefits balance at December 31	$ 3,790	$ 4,509	$ 4,183

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Amount of unrecognized tax benefits.

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