Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Compensation Cost Charged to Expense Under All Stock-based Incentive Awards (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 25, 2018	Mar. 26, 2017
Share-based Compensation Expense	$ 162	$ 398	$ 582
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Expense	102	150	150
Restricted Stock [Member]
Share-based Compensation Expense	$ 60	$ 248	$ 432

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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