Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Details)

v3.19.1
Stock-based Compensation - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2018
Mar. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of employee match     50.00%
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 4,856  
Unrecognized compensation expense, period of recognition   2 years 10 months 6 days  
RSU      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 387  
Unrecognized compensation expense, period of recognition   3 years 2 months 27 days  
Right to receive stock (in shares)   0  
Equity Incentive Plan 2014      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Additional shares authorized for grant (in shares) 4,400,000    
Shares authorized for grant (in shares)   9,114,000  
Shares available for grant (in shares)   1,580,000