Note 7 - Related Party Transaction (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 30, 2018	Dec. 30, 2018
Operating Leases, Rent Expense, Net, Total	$ 24,000	$ 72,000
JST Capital LLC [Member] | Carousel Facilities [Member] | Cost of Sales [Member]
Operating Leases, Rent Expense, Net, Total	20,000	60,000
JST Capital LLC [Member] | Carousel Facilities [Member] | Selling, General and Administrative Expenses [Member]
Operating Leases, Rent Expense, Net, Total	$ 4,000	$ 12,000