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Inventories
12 Months Ended
Dec. 31, 2021
INVENTORIES [Abstract]  
Inventory Disclosure INVENTORIES
Inventories consisted of the following at December 31:
20212020
Raw materials and parts$184,624 $132,041 
Work-in-progress76,019 55,688 
Finished goods153,900 109,882 
Total inventory$414,543 $297,611