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Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 11, 2015
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Commitments and Contingencies Disclosure [Line Items]        
Expiration year of lease agreements   2029    
Rent and related expense   $ 18.4 $ 16.8 $ 16.6
Royalty license expiration year   2023    
Non Income Tax Related Contingencies   $ 1.9    
Capital cost        
Commitments and Contingencies Disclosure [Line Items]        
Remedial alternative, EPA preferred remedy $ 7.3