Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Net change in total deferred tax asset valuation allowance	$ (1,200)	$ (19,500)	$ 6,400
Cumulative undistributed earnings of foreign subsidiaries	846,000
Chinese retroactive tax incentive	0	0	(1,227)
Income tax incentives	$ 6,716	$ 13,693	$ 12,721
Net impact of tax incentives, per diluted share	$ 0.13	$ 0.26	$ 0.23
Unrecognized tax benefits including interest and penalties	$ 7,900
Interest on unrecognized tax	100
Accrued income tax penalties and interest on unrecognized tax benefits	100	$ 3,300
Interest and penalties included in income tax expense		100	$ 100
Decrease in unrecognized tax benefits reserve including penalties and interest due to expiration of statute of limitations	8,300
Decrease in unrecognized tax benefits reserve due to expiration of statute of limitations	5,079	1,653	0
U.S. Federal [Member]
Income Taxes [Line Items]
Net change in total deferred tax asset valuation allowance		19,600
Operating loss carryforwards	57,100
Tax credit carryforward	$ 6,700
U.S. Federal [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2024
U.S. Federal [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2036
Tax credit carryforward expiration year	2036
State and local [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 77,000
Tax credit carryforward	$ 2,000
State and local [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2017
State and local [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2031
Tax credit carryforward expiration year	2036
Foreign [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 34,700
Foreign operating loss with indefinited carry forward period	$ 24,600
Foreign [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2026
China [Member]
Income Taxes [Line Items]
Income tax incentives	$ 1,302	5,347	2,800
China [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Income tax holidays expiration date	2018
Malaysia [Member}
Income Taxes [Line Items]
Income tax incentives	$ 2,346	2,075	2,299
Malaysia [Member} | Latest Tax Year [Member]
Income Taxes [Line Items]
Income tax holidays expiration date	2021
Thailand [Member]
Income Taxes [Line Items]
Income tax incentives	$ 3,068	$ 6,271	$ 7,622
Thailand [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Income tax holidays expiration date	2028