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Note 3 - Property and Equipment (Tables)
12 Months Ended
Jun. 30, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
June 30,
2016
   
June 30,
2015
 
Machinery and equipment
  $ 2,222,670     $ 2,923,577  
Buildings and structures
    401,470       1,385,125  
Computers and office equipment
    173,313       175,248  
      2,797,453       4,483,950  
Less accumulated depreciation
    (2,793,194 )     (2,506,731 )
    $ 4,259     $ 1,977,219