Long-Term Debt (2010 Credit Facilities) (Details) (USD $)	12 Months Ended			0 Months Ended						0 Months Ended				12 Months Ended				0 Months Ended		12 Months Ended	0 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 14, 2012 Loans Payable [Member] $15 Million Term Loan Add-On [Member]	Jun. 08, 2012 Loans Payable [Member] $65 Million Term Loan Add-On [Member]	Mar. 09, 2012 Loans Payable [Member] Term Loan B, due 2016 [Member]	Feb. 03, 2012 Loans Payable [Member] Term Loan B, due 2016 [Member]	Dec. 14, 2012 Loans Payable [Member] Term Loan B, due 2016 [Member]	Dec. 14, 2012 Unsecured Debt [Member] 2010 Credit Facilities [Member]	Mar. 05, 2012 Line of Credit [Member] Revolving credit facility, due 2014 [Member]	Apr. 16, 2013 Line of Credit [Member] Revolving credit facility, due 2014 [Member]	Jan. 18, 2013 Line of Credit [Member] Revolving credit facility, due 2014 [Member]	Jun. 08, 2012 Senior Subordinated Notes [Member] 7.875% senior subordinated notes, due 2013 [Member]	Jan. 01, 2011 Senior Subordinated Notes [Member] 8.875% senior second lien notes, due 2018 [Member]	Dec. 28, 2013 Senior Subordinated Notes [Member] 8.875% senior second lien notes, due 2018 [Member]	Dec. 29, 2012 Senior Subordinated Notes [Member] 8.875% senior second lien notes, due 2018 [Member]	Feb. 03, 2012 Senior Subordinated Notes [Member] 8.875% senior second lien notes, due 2018 [Member]	Dec. 14, 2012 Line of Credit and Loans Payable [Member] 2010 Credit Facilities [Member]	Jun. 08, 2012 Line of Credit and Loans Payable [Member] Term Loan B and Revolving Credit Facility Due 2014 [Member]	Jan. 01, 2011 Fees Paid to Consenting Lenders [Member] Senior Subordinated Notes [Member] 8.875% senior second lien notes, due 2018 [Member]	Jun. 08, 2012 Fees Paid to Consenting Lenders [Member] Line of Credit and Loans Payable [Member] Term Loan B and Revolving Credit Facility Due 2014 [Member]
Debt Instrument [Line Items]
Proceeds from equipment loan	$ 20,000,000	$ 0	$ 0	$ 15,000,000	$ 65,000,000
Credit facility, borrowing capacity									50,000,000	150,000,000	170,000,000	170,000,000
Debt instrument, face amount								380,000,000
Payments of debt issuance costs	15,570,000	37,836,000	2,675,000							1,000,000				9,400,000				2,700,000	1,100,000	7,600,000	1,800,000
Debt Instrument, Fee Amount							1,700,000											2,600,000	2,000,000
Debt, unamortized discount					700,000									2,800,000	1,700,000	2,000,000
Debt Instrument, Repurchase Limit													135,000,000
Percentage Of Net Proceeds Used To Pay Down Debt							25.00%										75.00%
Repayments of debt	$ 30,900,000	$ 0	$ 0			$ 34,700,000	$ 9,500,000