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Equity Incentive Plans and Stock-Based Compensation (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 24, 2014
shares
Apr. 30, 2009
shares
Jun. 30, 2012
shares
Dec. 31, 2015
numerator
denominator
shares
Apr. 23, 2015
shares
Mar. 31, 2006
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Tenure of award (in years)       10 years    
Numerator in conversion factor used to determine shares available for grant | numerator       1.5    
Denominator in conversion factor used to determine shares available for grant | denominator       1    
Increase in shares approved for issuance   6,500,000 6,500,000      
Number of shares reserved for issuance under the stock option plan       35,400,000   8,400,000
Option One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Requisite service period (in months)       60 months    
Option Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Requisite service period (in months)       48 months    
Stock Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase in shares approved for issuance 10,000,000          
Number of shares reserved for issuance under the stock option plan         4,000,000