Balance Sheet Details - Accrued Compensation and Other Employee Related Benefits (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accrued commissions $ 11,215 $ 6,609
Accrued bonuses 6,644 3,443
Accrued vacation 4,773 2,220
Other accrued compensation and employee related benefits 4,555 898
Total $ 27,187 $ 13,170