Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 12, 2012	Sep. 29, 2013	Sep. 30, 2012
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	$ 186	$ 194	$ 381	$ 369	$ 381
Cost of Sales [Member]
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	14	16	32	30
Operating Expense [Member]
Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Amortization Expense [Line Items]
Amortization expense	$ 172	$ 178	$ 349	$ 339