Interest and Other Expense (Income), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Other Income and Expenses [Abstract]
Interest income	$ (150)	$ (483)	$ (360)	$ (805)
Interest expense	11,339	4,213	22,776	8,129
Other expense, net	169	541	1,772	2,703
Total interest and other expense, net	$ 11,358	$ 4,271	$ 24,188	$ 10,027