XML 31 R21.htm IDEA: XBRL DOCUMENT v3.22.2.2
Note 5 - Inventories, Net (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30,

2022

  

December 31,

2021

 
         

Raw materials

 $1,366,405  $1,030,955 

Work-in-process

  684,000   194,060 

Inventories

 $2,050,405  $1,225,015