Stock-Based Compensation and Employee Benefit Plans - Stock-Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Stock based compensation | $ 2,609 | $ 2,169 | $ 7,165 | $ 5,206 |
Cost of net revenue [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Stock based compensation | 23 | 15 | 61 | 38 |
Research and development [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Stock based compensation | 1,661 | 1,308 | 4,590 | 3,014 |
Selling, general and administrative [Member]
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Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
Stock based compensation | $ 925 | $ 846 | $ 2,514 | $ 2,154 |