Note H - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
Effective Income Tax Rate Reconciliation, Percent, Total	27.70%	25.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 397	$ 311
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	256	259
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	3	$ 32
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 19