Contractual interest rate for funds borrowed, under the debt agreement.

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Long-Term Debt Debt Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014	Dec. 28, 2014
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt	$ 0	$ 0	$ (12,635)	$ 0
Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 200,000		$ 200,000		$ 0
Debt Instrument, Interest Rate, Stated Percentage	8.00%		8.00%
Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 0		$ 0		$ 150,000
Debt Instrument, Interest Rate, Stated Percentage	11.25%		11.25%
Transaction Costs [Member]
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt	$ 9,800
Deferred financing [Member]
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt	$ 2,800