Indebtedness and Interest Expense - Interest Expense (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 323		$ 3,004	$ 3,004
Interest Expense, Other Long-term Debt			$ 114	(260)	648
Interest expense		17,237	17,209	51,419	52,031
Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest Expense, Debt	[1]	7,646	7,724	23,303	23,229
Senior Notes [Member]
Debt Instrument [Line Items]
Interest Expense, Debt, Excluding Amortization		5,157	5,157	15,470	15,470
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
InterestExpenseSaleLeaseback		2,674	2,765
Capital Leases, Income Statement, Interest Expense		436	447	1,315	1,349
Sale Leaseback Obligations [Member]
Debt Instrument [Line Items]
InterestExpenseSaleLeaseback		$ 1,001		$ 8,067	$ 8,331
Amortization of debt issuance costs			$ 1,002
Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period					4.60%
SecuredCreditFacilitiesAndSeniorNotes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period				5.60%
Secured Credit Facilities, Bridge Loan Facility and Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period				5.50%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | The Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt Instrument, Additional Margin on Basis Spread of Variable Rate		3.25%		3.25%

[1] Nine Months Ended October 2, 2016 September 27, 2015 (in thousands)Term loan facility (1)$23,303 $23,229Senior notes15,470 15,470Capital lease obligations1,315 1,349Sale leaseback obligations8,067 8,331Amortization of debt issuance costs3,004 3,004Other260 648Total interest expense$51,419 $52,031