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PRODUCT WARRANTY COSTS (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Changes in the carrying amount of product warranty accruals    
Balance at beginning of year $ 15,398 $ 15,180
Accruals for warranties 7,328 6,200
Settlements (6,755) (5,787)
Foreign currency translation (229) 25
Balance at end of year $ 15,742 $ 15,618