Restructuring (detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Dec. 29, 2012	Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]
Balance		$ 37
Restructuring Reserve, Period Expense	2,510
Cash payments/write offs		(15)
Balance	2,532	2,532
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance		37
Restructuring Reserve, Period Expense	0
Cash payments/write offs		(15)
Balance	22	22
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance		0
Restructuring Reserve, Period Expense	1,403
Cash payments/write offs		0
Balance	1,403	1,403
Long Lived Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance		0
Restructuring Reserve, Period Expense	1,107
Cash payments/write offs		0
Balance	$ 1,107	$ 1,107