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Product Warranties - Product Warranty Activities (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Guarantees [Abstract]    
Beginning of period $ 6,266 $ 6,956
Provision for product warranties 3,527 1,880
Direct charges to warranty liability (3,859) (2,119)
Foreign currency translation (97) (28)
End of period $ 5,837 $ 6,689