Indebtedness and Interest Expense - Interest Expense (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Feb. 19, 2014
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 4,005	$ 4,005	$ 4,083
Interest expense		69,115	67,745	70,582
Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense	[1]	31,549	30,987	31,760
Other		951	516	829
Senior Notes [Member]
Debt Instrument [Line Items]
Interest expense, excluding amortization		20,330	19,774	21,023
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital Leases, Income Statement, Interest Expense		1,695	1,749	1,791
Sale Leaseback Obligations [Member]
Debt Instrument [Line Items]
InteretExpenseSaleLeaseback		$ 10,585	$ 10,714	$ 11,096
Senior Notes due 2022 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate		8.20%		8.30%
Debt Instrument, Interest Rate, Stated Percentage					8.00%
The Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Additional margin on variable rate		3.00%
London Interbank Offered Rate (LIBOR) [Member] | The Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Additional margin on variable rate		3.25%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | The Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Additional margin on variable rate		3.00%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | The Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Additional margin on variable rate		2.75%

[1] Includes amortization of original issue discount