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PRODUCT WARRANTY COSTS (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
PRODUCT WARRANTY COSTS    
Maximum period of warranty services 3 years  
Changes in the carrying amount of product warranty accruals    
Balance at beginning of year $ 15,781 $ 16,879
Accruals for Warranties 7,847 7,243
Settlements (8,283) (7,909)
Foreign currency translation 52 (184)
Balance at end of year $ 15,397 $ 16,029