Note K - Income Taxes (Details Textual) - USD ($)	6 Months Ended	12 Months Ended
Sep. 23, 2018	Sep. 24, 2017	Mar. 31, 2019
Effective Income Tax Rate Reconciliation, Percent, Total	28.50%	39.40%
Effective Income Tax Rate, Effect of Stock Compensation	0.40%	1.90%
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 46,000	$ 194,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	250,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 238,000
Scenario, Forecast [Member] \| Minimum [Member]
Effective Income Tax Rate Reconciliation, Percent, Total			27.00%
Scenario, Forecast [Member] \| Maximum [Member]
Effective Income Tax Rate Reconciliation, Percent, Total			30.00%

Represents effect of stock compensation on effective income tax rate.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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-Publisher FASB
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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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