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WARRANTY (Tables)
9 Months Ended
Sep. 30, 2020
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
Changes in the warranty liability during the nine months ended September 30, 2020 and 2019, respectively, consisted of the following (amounts in thousands):
 20202019
Warranty liability, January 1$14,334 $16,327 
Provision for warranty liabilities4,060 3,599 
Warranty payments made(4,346)(4,969)
Warranty liability, September 30$14,048 $14,957