XML 87 R58.htm IDEA: XBRL DOCUMENT v3.3.0.814
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ 1,691 $ 1,760 $ 5,071 $ 3,214