Summary of Restructuring Activity (Detail) (USD $) In Thousands	3 Months Ended
	Jul. 02, 2011	Jul. 03, 2010
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 3,671	$ 9,761
Cost Incurred	337	1,245
Payments	(1,778)	(2,899)
Asset Write down
Ending balance	2,230	8,107
Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning balance	2,782	9,761
Cost Incurred	137	1,245
Payments	(1,436)	(2,899)
Asset Write down
Ending balance	1,483	8,107
Facility Closing
Restructuring Cost and Reserve [Line Items]
Beginning balance	889
Cost Incurred	200
Payments	(342)
Asset Write down
Ending balance	$ 747