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Note 3 - Property and Equipment, Net (Tables)
9 Months Ended
Mar. 31, 2023
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31,

  

June 30,

 
  

2023

  

2022

 
         

Land and building

 $1,250  $1,250 
Leasehold improvements  1,371   1,371 
Machinery and equipment  6,783   6,727 
Transportation equipment  6   6 
   9,410   9,354 
Less: Accumulated depreciation and amortization  (7,691)  (7,444)

Total

 $1,719  $1,910