Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Taxes [Line Items]
Income tax incentives	$ 1,255	$ 927
Net impact of tax incentives, per diluted share	$ 0.03	$ 0.02
Unrecognized tax benefits including interest and penalties	$ 8,100
Interest on unrecognized tax	100
China [Member]
Income Taxes [Line Items]
Income tax incentives	$ 167	$ 0
Income tax holidays expiration date	2018
Malaysia [Member}
Income Taxes [Line Items]
Income tax incentives	$ 532	367
Income tax holidays expiration date	2021
Thailand [Member]
Income Taxes [Line Items]
Income tax incentives	$ 556	$ 560
Income tax holidays expiration date	2028