Note 9 - Balance Sheet Detail (Details) - Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Gross	$ 58,973	$ 82,708
Accumulated depreciation and amortization	(50,189)	(58,608)
Total property, plant and equipment, net	8,784	24,100
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Gross		6,660
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Gross	860	16,224
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Gross	40,736	42,258
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Gross	$ 17,377	$ 17,566