Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Net change in total deferred tax asset valuation allowance	$ (19,500,000)	$ 6,400,000	$ (11,500,000)
Cumulative undistributed earnings of foreign subsidiaries	787,000,000
Chinese retroactive tax incentive	0	(1,227,000)	0
Income tax incentives	13,693,000	12,721,000	8,842,000
Unrecognized tax benefits including interest and penalties	16,400,000
Interest on unrecognized tax	1,700,000
Penalty on unrecognized tax	1,600,000
Interest and penalties included in income tax expense	100,000
Decrease in unrecognized tax benefits reserve due to expiration of statute of limitations	$ 1,653,000
Latest Tax Year [Member]
Income Taxes [Line Items]
Tax credit carryforward expiration year	2027
U.S. Federal [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 53,500,000
Tax credit carryforward	$ 6,400,000
U.S. Federal [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2022
U.S. Federal [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2031
Tax credit carryforward	$ 2,035
State and local [Member]
Income Taxes [Line Items]
Tax credit carryforward	$ 1,700,000
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	2027
Foreign [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 27,400,000
Foreign operating loss with indefinited carry forward period	$ 25,000,000
Foreign [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration Year	2025
China [Member]
Income Taxes [Line Items]
Income tax incentives	$ 5,347,000	2,800,000	0
Income tax holidays expiration date	2015
Malaysia [Member}
Income Taxes [Line Items]
Income tax incentives	$ 2,075,000	2,299,000	1,559,000
Income tax holidays expiration date	2016
Thailand [Member]
Income Taxes [Line Items]
Income tax incentives	$ 6,271,000	$ 7,622,000	$ 7,283,000
Income tax holidays expiration date	2028
United States [Member] | State and local [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 80,300,000