Significant Accounting Policies - Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum | Building Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	15 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	3 years
Minimum | Tools and Dies
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	3 years
Minimum | Computer Hardware And Software
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	3 years
Maximum | Building Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	40 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	20 years
Maximum | Tools and Dies
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	7 years
Maximum | Computer Hardware And Software
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	5 years