Impact on Earnings from Interest Rate Swaps (Detail) (Interest Rate Swap, USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) recognized in other comprehensive income	$ (1,286)	$ (886)	$ (1,920)	$ (1,761)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from accumulated other comprehensive income (effective portion)	(787)	(921)	(1,577)	(1,911)
Other Expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain recognized in income (ineffective portion)	$ (37)	$ (18)	$ 3	$ (11)