Fair Value Measurements (Details) (USD $)									3 Months Ended		6 Months Ended
	Jun. 27, 2014	Dec. 31, 2013	Jun. 27, 2014 Senior notes Senior Secured Notes (9.50%)	Dec. 31, 2013 Senior notes Senior Secured Notes (9.50%)	Jun. 27, 2014 Fair Value, Inputs, Level 2 Senior notes Senior Secured Notes (9.50%)	Dec. 31, 2013 Fair Value, Inputs, Level 2 Senior notes Senior Secured Notes (9.50%)	Jun. 27, 2014 Not Designated as Hedging Instrument Accrued Liabilities Foreign Exchange Contract Fair Value, Inputs, Level 2	Dec. 31, 2013 Not Designated as Hedging Instrument Accrued Liabilities Foreign Exchange Contract Fair Value, Inputs, Level 2	Jun. 27, 2014 Not Designated as Hedging Instrument Other Nonoperating Income (Expense) Foreign Exchange Contract	Jun. 28, 2013 Not Designated as Hedging Instrument Other Nonoperating Income (Expense) Foreign Exchange Contract	Jun. 27, 2014 Not Designated as Hedging Instrument Other Nonoperating Income (Expense) Foreign Exchange Contract	Jun. 28, 2013 Not Designated as Hedging Instrument Other Nonoperating Income (Expense) Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net									$ 100,000	$ (100,000)	$ 100,000	$ 100,000
Derivative Liability, Fair Value, Gross Liability							(100,000)	(200,000)
Long-term debt	556,283,000	535,396,000	375,000,000	375,000,000
Fair value of long-term debt					$ 375,000,000	$ 375,000,000