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INVENTORIES, NET
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES, NET INVENTORIES, NET
Inventories are stated at the lower of cost, determined on either the first-in, first-out or average cost method, or net realizable value. Inventories, net of reserves, consist of the following components (in thousands):
March 31,
2021
December 31,
2020
Raw materials and components$134,085 $99,418 
Finished goods77,747 44,695 
Work in progress8,806 11,592 
Aftermarket parts5,453 6,567 
Used trailers1,081 1,478 
$227,172 $163,750