Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	$ 183	$ 187
Cost of Sales [Member]
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	16	16
Operating Expense [Member]
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	$ 167	$ 171