Property, Plant and Equipment (Additional Information) (Detail) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Computer Software, Intangible Asset [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$ 12,100,000	$ 12,800,000	$ 13,600,000
Impairment of long lived assets to be disposed off				$ 1,800,000