Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Stock Reserved for Future Issuance (Details)

v3.3.1.900
Stock-Based Compensation Stock Reserved for Future Issuance (Details) - shares
Dec. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]    
Common Stock, Capital Shares Reserved for Future Issuance 13,155,000  
Equity Incentive Plan [Member]    
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 4,694,000  
Employee Stock Purchase Plan [Member]    
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 1,247,000  
Stock Option [Member]    
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 3,572,000  
Restricted Stock Unit and Restricted Stock Award [Member]    
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 3,642,000 3,512,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 3,642,000