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WARRANTY (Tables)
12 Months Ended
Dec. 31, 2017
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):
 
2017
 
2016
Warranty liability, January 1
$
17,926

 
$
23,121

Provision for warranty liabilities
9,012

 
7,459

Warranty payments made
(8,326
)
 
(12,654
)
Warranty liability, December 31
$
18,612

 
$
17,926