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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Amortization of Intangible Assets $ 0.2 $ 0.3 $ 0.5 $ 0.6
2016 0.6   0.6  
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 6 months  
Land Use Rights [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     58 years 7 months 6 days  
Trademarks [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     9 years 9 months 18 days  
Technology [Member]        
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]        
Remaining amortization period     15 years 4 months 24 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