Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Income Taxes (Details Textual)

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Note 6 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Sep. 26, 2021
Sep. 27, 2020
Sep. 26, 2021
Sep. 27, 2020
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions $ 22,000 $ 20,000 $ 45,000 $ 33,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total 12,000 14,000 26,000 31,000
Effective Income Tax Rate Reconciliation, Aggregate Effect of Certain Tax Credits, Amount $ 28,000 $ 4,000 $ 72,000 $ 4,000