Stock-Based Compensation and Employee Benefit Plans - Stock-Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2014
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Mar. 31, 2013
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
Stock based compensation | $ 3,393 | $ 2,789 |
Cost of net revenue [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
Stock based compensation | 29 | 24 |
Research and development [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
Stock based compensation | 2,194 | 1,754 |
Selling, general and administrative [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
Stock based compensation | $ 1,170 | $ 1,011 |