XML 28 R15.htm IDEA: XBRL DOCUMENT v3.23.1
INVENTORIES
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES

9. INVENTORIES

 

At December 31, 2021 and 2020, inventories consisted of:

 

  December 31,   December 31, 
   2021   2020 
Raw materials, parts and supplies  $2,421,000   $1,189,000 
Work-in-progress   1,107,000    1,923,000 
Finished products   1,954,000    262,000 
Total inventories  $5,482,000   $3,374,000