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Note F - Economic Dependency (Tables)
 3 Months Ended
Sep. 30, 2017
Supplier Concentration Risk [Member]  
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
Three months Ended
September 30,
  
   
201
7
    
2016
  
Supplier
1
   $
1,967
      
(b)
  
    $
1,967
      
(a)
  
Customer Concentration Risk [Member]  
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   
Three months Ended
September 30,
  
   
2017
    
2016
  
Customer 1
   $
13,157
     $
17,090
  
Customer 2
    
3,161
    
(a)
  
    $
16,318
     $
17,090