Restructuring, Reorganization, Relocation and Severance (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
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	$ 0	$ 783	$ 0	$ 1,068
Restructuring Reserve [Roll Forward]
Beginning accrued liability			2,213
Charged to expense, net			0
Expenditures			(2,100)
Write-offs and adjustments			(113)
Ending accrued liability	0		0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning accrued liability			113
Charged to expense, net			0
Expenditures			0
Write-offs and adjustments			(113)
Ending accrued liability	0		0
Manufacturing Transfer [Member]
Restructuring Reserve [Roll Forward]
Beginning accrued liability			2,100
Charged to expense, net			0
Expenditures			(2,100)
Write-offs and adjustments			0
Ending accrued liability	0		0
Manufacturing Transfer Plan [Member] | Manufacturing Transfer [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance			$ 0