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Note N - Commitments and Contingencies (Tables)
12 Months Ended
Mar. 25, 2018
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
   
Lease
   
Sublease
   
Net lease
 
   
commitments
   
income
   
commitments
 
                         
2019
  $
1,654
    $
330
    $
1,324
 
2020
   
1,569
     
332
     
1,237
 
2021
   
1,089
     
309
     
780
 
2022
   
1,092
     
263
     
829
 
2023
   
1,103
     
175
     
928
 
Thereafter
   
4,892
     
690
     
4,202
 
                         
    $
11,399
    $
2,099
    $
9,300