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WARRANTY (Tables)
9 Months Ended
Sep. 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
23,036

 
18,052

Warranty payments made
(18,282
)
 
(14,979
)
Warranty liability, September 30
$
22,413

 
$
15,544