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Note 11 - Financial Information About Geographic Areas (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   

For the Three Months Ended

   

For the Six Months Ended

 
   

June 30,

   

June 30,

 
   

2025

   

2024

   

2025

   

2024

 

Net sales by geographic region

                               

United States

  $ 16,470,000     $ 16,128,000     $ 30,116,000     $ 29,427,000  

International

    202,000       161,000       378,000       345,000  
                                 

Consolidated net sales

  $ 16,672,000     $ 16,289,000     $ 30,494,000     $ 29,772,000  
   

June 30,

   

December 31,

 
   

2025

   

2024

 

Long-lived assets by geographic region

               

United States

  $ 7,125,000     $ 7,325,000  

International

    1,185,000       1,195,000  
                 

Consolidated total long-lived assets

  $ 8,310,000     $ 8,520,000