Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense of intangible assets	$ 18,272,000	$ 9,022,000
Impact of foreign exchange rates on intangible assets	$ 8,200,000