Derivatives And Hedging Activities (Details)	1 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended
	May 31, 2008 USD ($)	Jun. 30, 2013 USD ($)	Dec. 30, 2012 USD ($)	Dec. 30, 2012 EUR (€)	Jul. 01, 2012 USD ($)	Jun. 30, 2013 European And Asian Currencies [Member]	Jun. 30, 2013 Interest Rate Contract [Member] Interest Expense [Member] USD ($)	Jul. 01, 2012 Interest Rate Contract [Member] Interest Expense [Member] USD ($)	Jun. 30, 2013 Carrying (Reported) Amount, Fair Value Disclosure [Member] Fair Value, Measurements, Recurring [Member] USD ($)	Dec. 30, 2012 Carrying (Reported) Amount, Fair Value Disclosure [Member] Fair Value, Measurements, Recurring [Member] USD ($)	Jun. 30, 2013 Significant Other Observable Inputs (Level 2) [Member] Fair Value, Measurements, Recurring [Member] USD ($)	Dec. 30, 2012 Significant Other Observable Inputs (Level 2) [Member] Fair Value, Measurements, Recurring [Member] USD ($)
Derivative [Line Items]
Company's business conducted outside United States		60.00%
Maximum maturity period for foreign exchange contracts, in months						12 months
Forward foreign exchange contracts with U.S. equivalent notional amounts		$ 69,000,000	$ 64,300,000		$ 61,700,000
Foreign Currency Contract, Asset, Fair Value Disclosure									(483,000)	(274,000)	(483,000)	(274,000)
Duration of foreign currency derivative contract, days		30 days	30 days	30 days
Notional Amount of Cash Flow Hedge Instruments				50,000,000
Settlement of forward interest rate contracts with notional amounts	150,000,000
Accumulated derivative losses in other comprehensive (loss) income, net of taxes	8,400,000
Accumulated derivative losses in other comprehensive (loss) income, tax	5,400,000
Accumulated derivative losses related to effective cash flow hedges in accumulated other comprehensive loss, net of taxes		2,294,000	2,892,000
Accumulated derivative losses related to effective cash flow hedges in accumulated other comprehensive loss, tax		(1,500,000)
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion							1,000,000	1,000,000
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months		$ 2,000,000