XML 24 R42.htm IDEA: XBRL DOCUMENT v3.3.0.814
Intangible Assets - Summary of Amortization Expenses of Purchased Intangible Assets (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]        
Amortization of purchased intangible assets $ 273 $ 141 $ 1,096 $ 421
Cost of net revenues        
Finite-Lived Intangible Assets [Line Items]        
Amortization of purchased intangible assets 312 83 312 250
Operating costs and expenses        
Finite-Lived Intangible Assets [Line Items]        
Amortization of purchased intangible assets 273 141 1,096 421
Amortization expense        
Finite-Lived Intangible Assets [Line Items]        
Amortization of purchased intangible assets $ 585 $ 224 $ 1,408 $ 671