Quarterly report pursuant to Section 13 or 15(d)

- Additional Information (Details)

v3.10.0.1
- Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2018
Sep. 30, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of employee match     100.00%
Percent of employee match, thereafter     50.00%
Shares issued in employee benefit plan (in shares)   221,000  
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 5,569  
Unrecognized compensation expense, period of recognition   3 years 3 months 18 days  
RSU      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 475  
Unrecognized compensation expense, period of recognition   3 years 8 months 5 days  
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)   1,837,000