Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Income Taxes [Line Items]
Decreases as a result of a lapse of applicable statute of limitations in current year	$ 900	$ 8,300
Income tax incentives	$ 7,333	$ 3,547
Net impact of tax incentives, per diluted share	$ 0.15	$ 0.07
Unrecognized tax benefits including interest and penalties	$ 500
Interest on unrecognized tax	17
Additional reserve for uncertain tax benefits	900
Decreases related to prior year tax positions	7,300
China [Member]
Income Taxes [Line Items]
Income tax incentives	$ 888	$ 0
Income tax holidays expiration date	2018
Malaysia [Member}
Income Taxes [Line Items]
Income tax incentives	$ 3,151	1,594
Income tax holidays expiration date	2021
Thailand [Member]
Income Taxes [Line Items]
Income tax incentives	$ 3,294	$ 1,953
Income tax holidays expiration date	2028