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Note 4 - Property and Equipment, Net (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
June 30,
  
   
2017
    
2016
  
                 
Land and building
   $
1,250
     $
1,250
  
Leasehold improvements
    
1,268
      
1,210
  
Machinery and equipment
    
5,777
      
5,536
  
Transportation equipment
    
11
      
11
  
     
8,306
      
8,007
  
Less: Accumulated depreciation and amortization
    
(6,705
)
    
(6,440
)
Total
   $
1,601
     $
1,567