Goodwill and Intangible Assets, Net - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill acquired			$ 8,500,000
Goodwill impairment losses	0
Amortization expense	$ 2,073,000	$ 3,232,000	$ 504,000