XML 59 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Jul. 27, 2017
Mar. 31, 2018
Feb. 22, 2018
Dec. 31, 2017
Jul. 26, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized stock-based compensation, options   $ 15,256      
2017 Employee Stock Purchase Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock reserved (in shares)   2,414,688   1,600,000  
2017 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock reserved (in shares)   19,985,249   21,188,297 7,895,659
Percentage of common stock, outstanding   5.00%      
Restricted stock units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation expense, period for recognition   3 years 6 months 26 days      
Unrecognized stock-based compensation   $ 23,995      
Restricted stock units | 2017 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected life   10 years      
Award vesting period   4 years      
Employee stock purchase plan shares | 2017 Employee Stock Purchase Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock reserved (in shares) 1,600,000        
Percentage of common stock, outstanding 1.00%        
Increase in common stock reserved (in shares)     814,688    
Purchase price of common stock, percentage of market price of common stock   85.00%      
Employee Stock Option          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation expense, period for recognition   2 years 1 month 13 days      
Employee Stock Option | 2017 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected life   10 years      
Award vesting period   4 years