CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT) (Parenthetical) (Accumulated Other Comprehensive (Loss) Income [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Accumulated Other Comprehensive (Loss) Income [Member]
Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract]
Pension liability adjustments, tax expense (benefit)	$ 20,105	$ (5,225)	$ (23,217)
Reclassification of losses related to interest rate swap into earnings, tax expense			$ 863