Fair Value Measurements (Details) (USD $)									3 Months Ended
	Mar. 29, 2013	Dec. 31, 2012	Mar. 29, 2013 Senior notes Senior Secured Notes (9.50%)	Dec. 31, 2012 Senior notes Senior Secured Notes (9.50%)	Mar. 29, 2013 Fair Value, Inputs, Level 2 Senior notes Senior Secured Notes (9.50%)	Dec. 31, 2012 Fair Value, Inputs, Level 2 Senior notes Senior Secured Notes (9.50%)	Dec. 31, 2012 Accrued Liabilities Forward Contracts Fair Value, Inputs, Level 2	Mar. 29, 2013 Other Current Assets	Mar. 29, 2013 Other Nonoperating Income (Expense) Forward Contracts	Mar. 30, 2012 Other Nonoperating Income (Expense) Forward Contracts	Mar. 29, 2013 Other Operating Expense
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain									$ 300,000	$ 200,000
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value							(200,000)
Asset impairment charges											1,600,000
Assets Held-for-sale, Current								1,900,000
Long-term debt	536,121,000	516,674,000	375,000,000	375,000,000
Fair value of long-term debt					$ 367,500,000	$ 348,800,000