Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense of finite life intangible assets	$ 1,800,000	$ 600,000	$ 3,593,000	$ 750,000
Amortization expense of finite life intangibles for 2014	3,400,000		3,400,000
Amortization expense of finite life intangibles for 2015	7,100,000		7,100,000
Amortization expense of finite life intangibles for 2016	6,100,000		6,100,000
Amortization expense of finite life intangibles for 2017	5,200,000		5,200,000
Amortization expense of finite life intangibles for 2018	$ 4,000,000		$ 4,000,000