Note 3 - Credit Risk (Details) (USD $)	9 Months Ended	12 Months Ended
	Dec. 26, 2014	Mar. 31, 2014
Note 3 - Credit Risk (Details) [Line Items]
Cash, Uninsured Amount (in Dollars)	0
Allowance for Doubtful Accounts Receivable (in Dollars)	28,000	20,000
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Note 3 - Credit Risk (Details) [Line Items]
Concentration Risk, Number of Customers	1	1
Concentration Risk, Percentage	13.00%	19.00%