Indebtedness and Interest Expense - Schedule of Debt (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Jan. 01, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 990,300		$ 990,300		$ 994,113
Unamortized original issue discount	(1,965)		(1,965)		(2,235)
Debt Issuance Costs, Noncurrent, Net	(13,996)		(13,996)		(15,999)
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	(7,600)		(7,600)		(7,613)
Bank indebtedness and other long-term debt, net of deferred financing costs, less current portion	966,739		966,739		968,266
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
Long-term debt, gross	735,300		735,300		739,100
Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	255,000		255,000		255,000
Interest Expense, Debt, Excluding Amortization	5,083	5,157	10,165	10,313
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term debt, gross	0		0		$ 13
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital Leases, Income Statement, Interest Expense	414	439	831	879
InterestExpenseSaleLeaseback	2,663	2,636	5,302	5,394
Sale Leaseback Obligations [Member]
Debt Instrument [Line Items]
InterestExpenseSaleLeaseback	$ 1,001
Amortization of debt issuance costs		$ 1,001	$ 2,003	$ 2,002
Senior Notes due 2022 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.00%		8.00%