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Note 4 - Warranty Reserve (Tables)
6 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
  

Six Months Ended

  

Fiscal Year Ended

 
  

December 31, 2025

  

June 30, 2025

 

Warranty reserve, beginning

 $1,645,000  $1,567,000 

Accrual for products sold

  382,000   441,000 

Expenditures and costs incurred for warranty claims

  (214,000)  (363,000)

Warranty reserve, ending

 $1,813,000  $1,645,000