Derivative Instruments (Narrative) (Details) (USD $)								12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012 Interest Rate Swaps [Member] 2011 Interest Rate Swap Agreement [Member]	Dec. 31, 2011 Interest Rate Swaps [Member] 2011 Interest Rate Swap Agreement [Member]	Oct. 31, 2011 Interest Rate Swaps [Member] 2011 Interest Rate Swap Agreement [Member]	Dec. 29, 2012 Interest Rate Swaps [Member] Interest Rate Swaps Assumed From Merger [Member]	Dec. 31, 2011 Interest Rate Swaps [Member] Interest Rate Swaps Assumed From Merger [Member]	Dec. 29, 2012 Interest Expense [Member] Interest Rate Swaps Assumed From Merger [Member]
Derivative [Line Items]
Notional amount of interest rate swap agreements	$ 54,300,000	$ 56,300,000				$ 4,300,000
Derivative instrument hedged, amount					50,000,000
Variable interest rate					1.32%
Applicable margin			1.30%
Fair value of interest rate swap liability			1,400,000	900,000		200,000	400,000
Pre-tax gain/(loss) effect of hedges								800,000
Derivative, Maturity	December 2012				November 2015	October 2015
Notional amount for foreign currency forwards	$ 0	$ 18,100,000