Debt (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 30, 2014
Details of Debt
Carrying value		$ 592,302	$ 595,421
Less current portion		4,158	4,158
Long-term debt		588,144	591,263
Line of Credit Facility, Current Borrowing Capacity		110,000	110,000
Term Loan
Details of Debt
Carrying value		402,302	405,421
Senior Notes
Details of Debt
Carrying value		190,000	190,000
Revolving Facility ($110 million)
Details of Debt
Carrying value	[1]		$ 0
Line of Credit Facility, Current Borrowing Capacity		$ 90,900

[1] The Company had $90.9 million of borrowing capacity available under its revolving credit facility (“Revolving Facility”), net of $19.1 million of outstanding letters of credit at June 30, 2015 and at December 30, 2014.