Note M - Income Taxes (Details Textual) - USD ($)	6 Months Ended
	Sep. 27, 2020	Sep. 29, 2019
Effective Income Tax Rate Reconciliation, Percent, Total	27.90%	26.50%
Effective Income Tax Rate, Effect of Stock Compensation		1.90%
Share-based Payment Arrangement, Expense, Tax Benefit		$ 228,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		28.40%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 333,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 289,000