Note L - Income Taxes (Details Textual) - USD ($)	9 Months Ended		12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Mar. 27, 2016
Scenario, Forecast [Member] | Minimum [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			40.50%
Scenario, Forecast [Member] | Maximum [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			41.90%
Effective Income Tax Rate Reconciliation, Percent	41.00%	40.90%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent	(0.10%)	(0.30%)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 287,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	309,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ (98,000)