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Note J - Commitments (Tables)
12 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
   
2022
   
2023
   
2024
   
2025
   
2026
   
There-

after
   
Total
 
Gross minimum rental commitments
  $
3,193
    $
3,186
    $
2,659
    $
    $
    $
    $
9,038