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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]    
Property, plant and equipment $ 657,143 $ 618,041
Less: accumulated depreciation 485,361 443,482
Property, plant and equipment, net 171,782 174,559
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 11,650 11,115
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 103,563 100,169
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 317,073 297,342
Furniture and Fixtures, Office Equipment and Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 145,945 139,392
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 65,293 63,431
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment $ 13,619 $ 6,592