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Product Warranties - Product Warranty Activities (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Guarantees [Abstract]    
Beginning of period $ 5,205 $ 6,266
Product warranty liability from Newport Merger 3,040  
Provision for product warranties 5,067 3,527
Direct charges to warranty liability (5,213) (3,859)
Foreign currency translation 43 (97)
End of period $ 8,142 $ 5,837