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Note 4 - Inventory (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31,

2021

  

December 31,

2020

 
         

Raw materials and component parts

 $3,904,865  $3,897,133 

Work-in-process

  3,949,647   3,449,252 

Finished products

  9,183,532   3,999,920 

Total Inventory

  17,038,044   11,346,305 

Less: Inventory reserves

  452,607   315,345 

Net Inventory

 $16,585,437  $11,030,960