Income Taxes (Details) (USD $)	9 Months Ended			9 Months Ended				3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013	Sep. 28, 2014 Maximum	Sep. 28, 2014 Minimum	Sep. 28, 2014 Other Liabilities	Dec. 29, 2013 Other Liabilities	Sep. 28, 2014 Germany	Sep. 28, 2014 Germany Maximum	Sep. 28, 2014 Germany Minimum	Sep. 28, 2014 NETHERLANDS	Sep. 28, 2014 CANADA	Sep. 28, 2014 UNITED STATES Maximum	Sep. 28, 2014 UNITED STATES Minimum	Sep. 28, 2014 CHINA Maximum	Sep. 28, 2014 CHINA Minimum	Sep. 28, 2014 Finland Maximum	Sep. 28, 2014 Finland Minimum	Sep. 28, 2014 INDIA Maximum	Sep. 28, 2014 INDIA Minimum	Sep. 28, 2014 HONG KONG Maximum	Sep. 28, 2014 HONG KONG Minimum
Income Taxes [Line Items]
Effective tax rate	75.20%	50.50%
Net deferred tax assets	$ 17,000,000		$ 31,500,000
Increase (decrease) in valuation allowance								14,400,000			(2,400,000)	(300,000)
Current income tax receivable	1,900,000		2,800,000
Estimated tax payments	4,900,000
Current income tax expense	5,800,000
Current deferred tax liability	2,400,000
Unrecognized tax benefit, if recognized, would affect the effective tax rate	16,300,000		18,100,000
Interest and penalties benefit	0	200,000.0
Accrued interest and penalties related to unrecognized tax benefits	4,400,000		4,400,000			17,200,000	19,600,000
Expected change of gross unrecognized tax benefits, minimum	3,200,000
Expected change of gross unrecognized tax benefits, maximum	$ 10,800,000
Income Tax Examination, Year under Examination									2009	2006							2009	2008	2013	2011
Open tax years currently under audit									2013	2006			2013	2011	2013	2011					2013	2007
Income Tax Holiday, Termination Date				2017	2015