v3.4.0.3
Stock-Based Compensation (Details 2) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jul. 01, 2015
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Summary of restricted stock unit activity        
Total unrecognized compensation cost related to unvested RSUs   $ 13,500    
Unrecognized compensation cost period expected to be realized   2 years 6 months    
Stock options        
Fair value assumptions and methodology        
Risk-free interest rate (as a percent)   1.90% 1.80%  
Expected Term in (Years)   6 years 29 days    
Expected Volatility (as a percent)   50.00% 50.00%  
Dividend yield (as a percent)   0.00% 0.00%  
Weighted average grant date fair value (in dollars per share)   $ 13.82 $ 9.57  
Number of Options        
Outstanding balance at the beginning of the period (in shares)   5,298,510    
Granted (in shares)   3,617    
Exercised (in shares)   (276,138)    
Forfeited (in shares)   (6,349)    
Outstanding balance at the end of the period (in shares)   5,019,640   5,298,510
Exercisable at the end of the period (in shares)   3,394,170    
Vested and expected to vest at the end of the period (in shares)   4,912,908    
Weighted Average Exercise Price per Share        
Outstanding balance at the beginning of the period (in dollars per share)   $ 8.07    
Granted (in dollars per share)   27.98    
Exercised (in dollars per share)   3.60    
Forfeited (in dollars per share)   9.99    
Outstanding balance at the end of the period (in dollars per share)   8.33   $ 8.07
Exercisable at the end of the period (in dollars per share)   4.61    
Vested and expected to vest at the end of the period (in dollars per share)   $ 8.12    
Weighted Average Remaining Contractual Term        
Outstanding balance   6 years 4 months 24 days   6 years 7 months 28 days
Granted   9 years 9 months 4 days    
Exercised   4 years 11 months 16 days    
Exercisable at the end of the period   5 years 7 months 6 days    
Vested and expected to vest at the end of the period   6 years 4 months 10 days    
Aggregate Intrinsic Value        
Outstanding balance at the end of the period   $ 73,842   $ 105,595
Exercisable at the end of the period   61,080    
Vested and expected to vest at the end of the period   73,173    
Additional disclosures        
Compensation cost related to the nonvested awards not yet recognized   $ 10,300    
Weighted average period for recognition of compensation cost   2 years    
Aggregate intrinsic value of employee options exercised   $ 5,300 $ 5,600  
Summary of shares of common stock granted during the period        
Number of Shares Underlying Options Granted   3,617    
Exercise Price per Share   $ 27.98    
Estimated Grant Date Fair Value per Share   $ 13.82 $ 9.57  
Stock options | Minimum        
Fair value assumptions and methodology        
Expected Term in (Years)     5 years 9 months 29 days  
Stock options | Maximum        
Fair value assumptions and methodology        
Expected Term in (Years)     6 years 29 days  
Restricted Stock Units        
Summary of restricted stock unit activity        
Outstanding balance at the beginning of the period (in shares)   1,220,008    
Granted (in shares)   8,177    
Vested (in shares)   (209,077)    
Forfeited (in shares)   (7,733)    
Outstanding balance at the end of the period (in shares)   1,011,375   1,220,008
Weighted-Average Grant-Date Fair value        
Outstanding at the beginning of the period (in dollars per share)   $ 17.97    
Granted (in dollars per share)   27.98    
Vested (in dollars per share)   11.24    
Forfeited (in dollars per share)   16.17    
Outstanding at the end of the period (in dollars per share)   $ 19.45   $ 17.97
Other stock awards        
Summary of restricted stock unit activity        
Granted (in shares)   21,953    
Fair value of stocks granted   $ 400    
2014 Equity Incentive Plan | Stock options        
Summary of restricted stock unit activity        
Granted (in shares) 669,013      
2014 Equity Incentive Plan | Restricted Stock Units        
Summary of restricted stock unit activity        
Granted (in shares) 626,135