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Significant Accounting Policies - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Segment
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Significant Accounting Policies [Line Items]      
Foreign Currency Transaction Gain (Loss), before Tax $ 0.1 $ 1.5 $ 1.7
Number of operating segments | Segment 2    
Depreciation $ 18.9 12.0 11.4
Deferred revenue 2.6 2.6  
Selling, General and Administrative Expenses      
Significant Accounting Policies [Line Items]      
Research and development expenses $ 13.4 $ 14.0 $ 13.1
Building | Minimum      
Significant Accounting Policies [Line Items]      
Useful life 8 years    
Building | Maximum      
Significant Accounting Policies [Line Items]      
Useful life 40 years    
Machinery and Equipment | Minimum      
Significant Accounting Policies [Line Items]      
Useful life 3 years    
Machinery and Equipment | Maximum      
Significant Accounting Policies [Line Items]      
Useful life 15 years    
Leasehold Improvements      
Significant Accounting Policies [Line Items]      
Useful life description over the shorter of the remaining life of the lease or the useful life of the improvement