Note J - Income Taxes (Details Textual) - USD ($)	3 Months Ended			12 Months Ended
	Jun. 26, 2016	Jun. 28, 2015	Jun. 28, 2015	Mar. 26, 2017
Provision for Income Taxes [Member]
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ 621,000
Scenario, Forecast [Member] | Minimum [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				42.00%
Scenario, Forecast [Member] | Maximum [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				44.00%
Scenario, Forecast [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit				$ (31,000)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	31.30%		41.30%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent	12.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Investments, Percent	2.00%
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent	0.50%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent	0.10%
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ (621,000)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	201,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 209,000