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Note D - Leases (Tables)
12 Months Ended
Jun. 30, 2021
Notes Tables  
Lease, Cost [Table Text Block]
Supplemental Cash Flows Information
 
2021
   
2020
 
Cash paid for amounts included in the measurement of operating lease Liabilities
  $
3,298
    $
3,453
 
Operating lease liabilities arising from recording Right of Use Assets upon adoption of ASC 842
   
     
20,897
 
Operating lease liabilities arising from obtaining Right of Use Assets for new leases
   
187
     
120