| Balance Sheet Details - Inventory (Detail) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 | 
|---|---|---|
| Balance Sheet Related Disclosures [Abstract] | ||
| Work-in-process | $ 19,667 | $ 4,169 | 
| Finished goods | 16,598 | 6,689 | 
| Inventory Total | $ 36,265 | $ 10,858 | 
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- References No definition available. 
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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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