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WARRANTY OBLIGATIONS - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Product Warranty Liability [Line Items]      
Additional warranty expense $ 19,414 $ 9,954 $ 8,591
Field Performance Data And Diagnostic Root-Cause Failure Analysis      
Product Warranty Liability [Line Items]      
Additional warranty expense 11,600    
Increase In Replacement Cost Assumption Changes      
Product Warranty Liability [Line Items]      
Additional warranty expense $ 7,800    
Failure Rates      
Product Warranty Liability [Line Items]      
Additional warranty expense   8,800  
Failure Rates | Second And Third Generations      
Product Warranty Liability [Line Items]      
Additional warranty expense     3,100
Increased Tariffs And Labor Reimbursement Costs      
Product Warranty Liability [Line Items]      
Additional warranty expense   $ 1,200  
Increased U.S. Tariffs For Products Manufactured In China      
Product Warranty Liability [Line Items]      
Additional warranty expense     $ 5,500