Summary of Significant Accounting Policies - Property and Equipment, Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2013
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	Lesser of life of lease or economic life
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Information systems [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Machinery, equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member] | Machinery, equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years