Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Employee Benefit Plans - Stock-Based Compensation (Detail)

v2.4.0.8
Stock-Based Compensation and Employee Benefit Plans - Stock-Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock based compensation $ 3,463 $ 2,609 $ 9,591 $ 7,165
Cost of net revenue [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock based compensation 29 23 79 61
Research and development [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock based compensation 2,183 1,661 6,095 4,590
Selling, general and administrative [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock based compensation $ 1,251 $ 925 $ 3,417 $ 2,514