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WARRANTY (Tables)
6 Months Ended
Jun. 30, 2017
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability [Table Text Block] Changes in the warranty liability consisted of the following (amounts in thousands):
 
2017
 
2016
Warranty liability, January 1
$
17,926

 
$
23,120

Provision for warranty liabilities
3,112

 
3,373

Warranty payments made
(3,378
)
 
(6,205
)
Warranty liability, June 30
$
17,660

 
$
20,288