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Note 5 - Inventories (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

March 31,

   

December 31,

 
   

2025

   

2024

 
                 

Raw materials

  $ 11,232,000     $ 10,948,000  

Work in process

    3,616,000       2,934,000  

Finished goods

    8,717,000       8,851,000  
    $ 23,565,000     $ 22,733,000