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Product Warranties - Product Warranty Activities (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Guarantees [Abstract]    
Beginning of period $ 6,266 $ 6,956
Provision for product warranties 4,343 2,713
Direct charges to warranty liability (5,296) (3,271)
Foreign currency translation (108) (132)
End of period $ 5,205 $ 6,266