Note 8. Restructuring Charges and Exit Costs (Detail) - Summary of the Activities Affecting Liabilities (USD $)	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Beginning balance	$ 8,041,000	$ 288,000
Additions/adjustments	1,554,000	14,225,000
Non-cash charges	(56,000)	(4,601,000)
Payments	(6,253,000)	(1,871,000)
Ending balance	3,286,000	8,041,000
Lease Contract Termination Costs [Member]
Beginning balance	5,235,000
Additions/adjustments	6,000
Non-cash charges	(56,000)
Payments	(2,325,000)
Ending balance	2,860,000
Employee Severance [Member]
Beginning balance	2,806,000
Additions/adjustments	1,548,000	4,321,000
Payments	(3,928,000)	(1,515,000)
Ending balance	426,000	2,806,000
Lease Abandonment Charges [Member]
Beginning balance		288,000
Additions/adjustments		7,869,000
Non-cash charges		(2,566,000)
Payments		(356,000)
Ending balance		5,235,000
Accelerated Amortization And Depreciation Charges [Member]
Additions/adjustments		1,883,000
Non-cash charges		(1,883,000)
Inventory Write Off Costs [Member]
Additions/adjustments		152,000
Non-cash charges		$ (152,000)