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Note 4 - Property and Equipment, Net (Tables)
12 Months Ended
Jun. 30, 2023
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

June 30,

 
  

2023

  

2022

 
         

Land and building

 $1,250  $1,250 

Leasehold improvements

  1,371   1,371 

Machinery and equipment

  6,801   6,727 

Transportation equipment

  -   6 
   9,422   9,354 

Less:  Accumulated depreciation and amortization

  (7,769)  (7,444)

Total

 $1,653  $1,910