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WARRANTY (Tables)
6 Months Ended
Jun. 30, 2012
WARRANTY COSTS [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
Changes in the warranty liability consisted of the following (amounts in thousands):
 
2012
 
2011
Warranty liability, January 1
$
17,659

 
$
12,471

Provision for warranty liabilities
15,568

 
11,394

Warranty payments made
(12,040
)
 
(9,638
)
Warranty liability, June 30
$
21,187

 
$
14,227