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Note J - Economic Dependency (Tables)
 12 Months Ended
Jun. 30, 2018
Supplier Concentration Risk [Member]  
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
Year ended June 30,
  
   
201
8
    
201
7
  
   
Raw Material
Purchases by
Supplier
    
% of Total
Raw
Material
Purchases
    
Raw Material
Purchases by
Supplier
    
% of Total
Raw
Material
Purchases
  
Supplier 1
   $
7,727
      
11
 %  
(a)
    
(a
 )
Supplier 2
    
7,487
      
10
 %  
(a)
    
(a
 )
Supplier 3
  
(a)
    
(a
 )    
6,694
      
12
 %
    $
15,214
      
21
 %   $
6,694
      
12
 %
Customer Concentration Risk [Member]  
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
Fiscal 201
8
    
Fiscal 201
7
  
Customer 1
   $
74,349
     $
60,532
  
Customer 2
    
13,881
    
(a)
  
    $
88,230
     $
60,532