Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.20.1
Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Issuance of common stock shares (in shares)       1,085,096  
Selling and Marketing Expense          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum number of shares participant may purchase       2,000  
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average grant-date fair value of stock options granted (in dollars per share)         $ 0.15
Total fair value for options       $ 348 $ 343
Exercised option (in shares)       488,090 293,778
Aggregate intrinsic value of options $ 7,619     $ 7,619 $ 483
Unrecognized compensation expense $ 221     $ 221 $ 640
Straight-line basis over weighted average period       1 year 7 months 6 days  
Restricted Stock Units (RSUs) - Employees          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock unit awards granted (in shares)     620,363    
Restricted stock unit awards grant date fair value (in dollars per share)     $ 7.34    
Restricted Stock Units (RSUs) - Non-Employee Directors          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock unit awards granted (in shares) 336,595   45,000    
Restricted stock unit awards grant date fair value (in dollars per share)     $ 7.34    
Restricted Stock Units (RSUs) - Team Members          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock unit awards granted (in shares) 240,964 1,603,000      
Restricted stock unit awards grant date fair value (in dollars per share)   $ 2.11      
Vesting period of award   4 years      
Restricted Stock Units (RSUs) - Non-Employees          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock unit awards granted (in shares) 400,000        
Restricted stock unit awards grant date fair value (in dollars per share) $ 1.26     $ 1.26  
2018 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Issuance of common stock shares (in shares)       1,471,669,000  
Common stock reserved for issuance (in shares) 205,206     205,206 2,729,416
2018 Equity Incentive Plan | Employee Stock | Post-Closing Outstanding Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage increase 10.00%     10.00%  
2018 Equity Incentive Plan | Employee Stock | Outstanding Shares on Last Day of Immediately Preceding Year          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage increase 5.00%     5.00%  
2009 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unvested shares (in shares) 6,219,000     6,219,000 40,707,000
Accrued expenses $ 3     $ 3 $ 34
Unamortized fair value of the restricted stock units $ 6,328     $ 6,328  
Amortization period of restricted stock cost       2 years 4 months 24 days  
2018 Employee Stock Purchase Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock reserved for issuance (in shares) 272,942     272,942 272,942
Expiration period       27 months  
ESPP, purchase price percentage       85.00%  
2018 Employee Stock Purchase Plan | Employee Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage increase 3.00%     3.00%  
Percent of shares outstanding on last day 1.50%     1.50%