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Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2015
Goodwill [Line Items]
Goodwill	$ 192,116	$ 191,616	$ 191,616	$ 199,290
Acquisition	500
Purchase accounting adjustments		(7,674)
Americas [Member]
Goodwill [Line Items]
Goodwill	154,014	153,514	153,514	161,188
Acquisition	500
Purchase accounting adjustments		(7,674)
Asia [Member]
Goodwill [Line Items]
Goodwill	38,102	38,102	$ 38,102	$ 38,102
Acquisition	$ 0
Purchase accounting adjustments		$ 0