Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill And Other Intangible Assets [Line Items]
Amortization of intangible assets	$ 6,300	$ 5,000	$ 4,600
Purchased software costs, capitalized	934	1,178	1,908
Tianjin building held for sale			5,400
Proceeds from sale of Tianjin Subsidiary		5,700
Gain on sale of subsidiary	$ 0	$ 1,547	$ 0
Minimum [Member] | Customer Relationships [Member]
Goodwill And Other Intangible Assets [Line Items]
Estimated useful life	10 years
Minimum [Member] | Capitalized Purchased Software Costs [Member]
Goodwill And Other Intangible Assets [Line Items]
Estimated useful life	2 years
Maximum [Member] | Customer Relationships [Member]
Goodwill And Other Intangible Assets [Line Items]
Estimated useful life	14 years
Maximum [Member] | Capitalized Purchased Software Costs [Member]
Goodwill And Other Intangible Assets [Line Items]
Estimated useful life	10 years