Note 13 - Income Taxes - Liability for Uncertain Tax Positions (Details) - USD ($)	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Balance as of beginning of year	$ 123,000	$ 122,000
Increase based on current year tax positions	9,000	1,000
Reductions for prior year tax positions
Balance as of end of year	$ 132,000	$ 123,000