v2.4.0.8
Goodwill and Intangible Assets, Net - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Jun. 30, 2014
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]            
Goodwill $ 51,889,000     $ 51,889,000   $ 51,889,000
Goodwill, Impairment Loss     0     0
Weighted average remaining useful life       4 years 3 months 18 days    
Amortization of intangible assets $ 400,000 $ 400,000   $ 1,200,000 $ 1,200,000