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Stock-Based Awards - Plans Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the fair market value at time of grant 85.00%    
Percentage of the fair market value at the time of exercise 85.00%    
Compensation expense recognized $ 54,699 $ 43,081 $ 33,680
Incentive stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense recognized $ 23,000 28,000 28,800
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 1,859,000    
Compensation expense recognized $ 31,900 15,000 $ 5,700
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares issuable under plan (in shares) 2,662,513    
Compensation expense recognized $ 1,400 $ 900  
1999 and 2009 Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares issuable under plan (in shares) 0    
2010 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares issuable under plan (in shares) 2,545,059    
Additional issuable shares authorization, annual increase, maximum number of shares (in shares) 5,500,000    
Additional issuable shares authorization, annual increase, percentage of outstanding stock, maximum 4.50%    
2010 Plan | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 1,858,720    
2010 Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized under plan (in shares) 3,680,480    
2010 Plan | Minimum | Incentive stock options | Individual owning more than 10% of outstanding stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercise price as percentage of fair market value per share 110.00%    
2010 Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares to be added from 1999 and 2009 Plans (in shares) 5,614,369    
2010 Plan | Maximum | Incentive stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award expiration period 10 years    
2010 Plan | Maximum | Incentive stock options | Individual owning more than 10% of outstanding stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award expiration period 5 years