Note 12 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Income Tax Expense (Benefit), Total			$ 2,000	$ 42,000
Effective Income Tax Rate Reconciliation, Percent, Total			0.00%	0.00%
Unrecognized Tax Benefits, Ending Balance	123,000		$ 123,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0		$ 0

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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