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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Amortization of Intangible Assets $ 0.3 $ 0.3 $ 0.8 $ 0.9
2016 0.3   0.3  
2017 1.0   1.0  
2018 1.0   1.0  
2019 1.0   1.0  
2020 $ 0.9   $ 0.9  
Remaining amortization period     17 years 8 months 12 days  
Patents [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     9 years 3 months 18 days  
Land Use Rights [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     58 years 6 months  
Trademarks [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     9 years 7 months 6 days  
Technology [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     15 years 1 month 6 days  
Customer Relationships [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     13 years 3 months 18 days