Fair Value Measurements Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	10 Months Ended											3 Months Ended	9 Months Ended
	Sep. 28, 2014 cash_flow_hedge	Oct. 24, 2013	Dec. 29, 2013 cash_flow_hedge	Sep. 28, 2014 Interest Rate Swap [Member] Other Liabilities [Member] Accumulated Other Comprehensive Income (Loss) [Member]		Dec. 29, 2013 Interest Rate Swap [Member] Deferred Costs and Other Assets [Member] Accumulated Other Comprehensive Income (Loss) [Member]		Sep. 28, 2014 Term A Loan, 2018 [Member] Interest Rate Swap [Member]	Dec. 29, 2013 Term A Loan, 2018 [Member] Interest Rate Swap [Member]	Sep. 28, 2014 Term B Loan, 2019 [Member] Interest Rate Swap [Member]	Dec. 29, 2013 Term B Loan, 2019 [Member] Interest Rate Swap [Member]	Sep. 29, 2013 Term Loan, 2012 [Member]	Sep. 29, 2013 Term Loan, 2012 [Member] Interest Rate Swap [Member]	Sep. 29, 2013 Term Loan, 2012 [Member] Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate derivatives held	7		7
Derivative liability, Notional amount								$ 350,000	$ 350,000	$ 100,000	$ 100,000
Cash flow hedges				1,293	[1]
Cash flow hedges						1,212	[1]
Gain (loss) on cash flow hedge ineffectiveness, net	0
Derivative asset, Notional amount													225,000	225,000
Debt Instrument, Interest Rate, Stated Percentage												6.20%
Interest and other income													1,429	4,319
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net		$ 0

[1] The fair values were developed using market observable data for all significant inputs.