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WARRANTY (Tables)
3 Months Ended
Mar. 31, 2021
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
Changes in the warranty liability during the three months ended March 31, 2021 and 2020, respectively, consisted of the following (amounts in thousands):
 20212020
Warranty liability, January 1$15,040 $14,334 
Provision for warranty liabilities2,196 1,962 
Warranty payments made(1,869)(2,028)
Warranty liability, March 31$15,367 $14,268