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Product Warranties - Product Warranty Activities (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Guarantees [Abstract]    
Beginning of period $ 5,205 $ 6,266
Provision for product warranties 783 1,109
Direct charges to warranty liability (984) (1,244)
Foreign currency translation 35 (67)
End of period $ 5,039 $ 6,064