Supplemental Cash Flow Information (Narrative) (Details)	0 Months Ended	12 Months Ended
	May 16, 2011 USD ($)	Dec. 25, 2011 USD ($)	Dec. 26, 2010 USD ($)	Dec. 27, 2009 USD ($)	Sep. 27, 2009 USD ($)	Sep. 27, 2009 HKD	May 16, 2011 Purchase Price Funded By Cash [Member] USD ($)	May 16, 2011 Purchase Price Funded By Senior Secured Credit Facility [Member] USD ($)
Supplemental Cash Flow Information [Line Items]
Payments for interest		$ 6,700,000	$ 3,600,000	$ 6,300,000
Income taxes		17,900,000	22,400,000	8,700,000
Proceeds from sale-type lease receivable		38,000,000
Business acquisition, purchase price	78,700,000							9,200,000
Cash acquired on acquisition	1,900,000
Capital lease assumed	4,200,000	20,270,000		32,669,000
Purchase price, cash							66,700,000
Properties and associated liabilities transferred					5,600,000	43,000,000
New capital lease obligation and related capitalized assets		$ 100,000	$ 400,000	$ 2,800,000