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Indebtedness and Interest Expense - Interest Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Debt Instrument [Line Items]        
Amortization of debt issuance costs $ 281      
Interest Expense, Other Long-term Debt   $ (388) $ (596) $ (63)
Interest expense 17,061 17,121 34,123 34,182
Term Loan Facility [Member]        
Debt Instrument [Line Items]        
Interest Expense, Debt 7,619 7,500 15,226 15,657
Senior Notes [Member]        
Debt Instrument [Line Items]        
Interest Expense, Debt, Excluding Amortization 5,083 5,157 10,165 10,313
Capital Lease Obligations [Member]        
Debt Instrument [Line Items]        
InterestExpenseSaleLeaseback 2,663 2,636 5,302 5,394
Capital Leases, Income Statement, Interest Expense 414 439 831 879
Sale Leaseback Obligations [Member]        
Debt Instrument [Line Items]        
InterestExpenseSaleLeaseback $ 1,001      
Amortization of debt issuance costs   $ 1,001 $ 2,003 $ 2,002
Term Loan Facility [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate During Period       4.70%
SecuredCreditFacilitiesAndSeniorNotes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate During Period     5.50%  
Secured Credit Facilities, Bridge Loan Facility and Senior Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate During Period       5.60%
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%