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Note L - Share-based Compensation (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 29, 2015
Mar. 27, 2015
Mar. 10, 2015
Jun. 25, 2017
Jun. 26, 2016
Mar. 29, 2015
Allocated Share-based Compensation Expense       $ 99,000 $ 173,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized       $ 399,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       1 year 29 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       0    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price       $ 0    
Share Price   $ 73.56        
Special Cash Dividend [Member]            
Common Stock, Dividends, Per Share, Declared   25 $ 25      
Excluding Dividend [Member]            
Share Price   $ 48.56        
Employee Stock Option [Member]            
Allocated Share-based Compensation Expense       $ 38,000 $ 38,000  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period           5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period           4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross           50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price           $ 53.89
Employee Stock Option [Member] | The 2010 Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 75,745          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 35.576