Property, Plant and Equipment, Net - Estimated Useful Lives by Major Asset Category (Detail)	12 Months Ended
	Dec. 31, 2013
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, description	39 Lesser of (i) 39 years, (ii) expected useful life of improvement or (ii) life of lease (including likely extension thereof)
Property, plant and equipment, useful life	39 years
Tooling and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Office furniture and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Office furniture and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Transportation equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Transportation equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years