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WARRANTY (Tables)
12 Months Ended
Dec. 31, 2018
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability [Table Text Block] Changes in the warranty liability for the periods set forth below consisted of the following (amounts in thousands):
 
2018
 
2017
Warranty liability, January 1
$
18,612

 
$
17,926

Provision for warranty liabilities
5,231

 
9,012

Warranty payments made
(6,516
)
 
(8,326
)
Warranty liability, December 31
$
17,327

 
$
18,612