Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 25, 2012	Mar. 27, 2011	Dec. 25, 2011		Sep. 25, 2011
Income Taxes [Line Items]
Effective tax rate	48.40%	14.30%
Net deferred tax assets	$ 11,700,000		$ 11,700,000
Valuation allowance					48,000,000
Other current assets	49,118,000		44,548,000	[1]
Current income tax receivable	12,600,000
Estimated tax payments	2,300,000
Income tax benefit	(10,300,000)
Other current liabilities	27,761,000		32,867,000	[1]
Current deferred tax liability	4,700,000
Unrecognized tax benefit, if recognized, would affect the effective tax rate	12,700,000		13,200,000
Interest and penalties expense	200,000	200,000
Accrued interest and penalties related to unrecognized tax benefits	4,800,000		4,600,000
Expected change of gross unrecognized tax benefits, minimum	2,400,000
Expected change of gross unrecognized tax benefits, maximum	$ 4,400,000
Maximum [Member] | United States [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2008
Maximum [Member] | Germany [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2009
Maximum [Member] | Finland [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2009
Maximum [Member] | Sweden [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2009
Maximum [Member] | France [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2010
Minimum [Member] | United States [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2007
Minimum [Member] | Germany [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2002
Minimum [Member] | Finland [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2008
Minimum [Member] | Sweden [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2007
Minimum [Member] | France [Member]
Income Taxes [Line Items]
Open tax years currently under audit	2008

[1] Derived from the Company's audited Consolidated Financial Statements at December 25, 2011.