Fair Value Measurement, Financial Instruments And Risk Management (Narrative) (Details)	12 Months Ended					12 Months Ended				12 Months Ended
	Dec. 25, 2011 USD ($)	Dec. 26, 2010 USD ($)	Dec. 27, 2009 USD ($)	Dec. 25, 2011 Foreign Currency Forward Exchange Contracts [Member] USD ($)	Dec. 26, 2010 Foreign Currency Forward Exchange Contracts [Member] USD ($)	Dec. 25, 2011 Foreign Currency Revenue Forecast Contracts [Member] USD ($)	Dec. 25, 2011 Foreign Currency Revenue Forecast Contracts [Member] EUR (€)	Dec. 26, 2010 Foreign Currency Revenue Forecast Contracts [Member] USD ($)	Jun. 27, 2010 Interest Rate Swap [Member] USD ($)	Dec. 25, 2011 Senior Secured Credit Facility [Member]	Dec. 25, 2011 Senior Secured Notes [Member]
Fair Value Disclosures [Line Items]
Notional amount of derivatives						$ 20,300,000	€ 14,600,000		$ 40,000,000
Line of credit facility, maturity date										2014
Debt instrument, maturity date start											2015
Debt instrument, maturity date end											2017
Notional amount of derivatives not designated as hedging instruments				26,000,000
Assets	1,583,000	965,000		463,000	27,000	1,120,000		938,000
Liabilities	415,000	298,000		415,000	20,000			278,000
Unrealized gain recorded in other comprehensive income, net of tax	1,165,000	679,000	(1,182,000)			1,700,000
Tax of unrealized gain recorded in other comprehensive income						32,000
Unrealized gain from cash flow hedge reclassified to earnings	1,600,000
Expense related to foreign currency hedges recorded in cost of goods sold	1,800,000
Hedge ineffectiveness						100,000
Aggregate foreign currency transaction losses	$ 2,100,000	$ 2,700,000	$ 400,000