Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Narrative (Details)

v3.21.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Selling and Marketing Expense            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares participant may purchase         2,000  
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) 50,000 39,426        
Restricted stock unit awards grant date fair value (in dollars per share)   $ 1.28        
Restricted Stock Units (RSUs) - Non-Employee Directors | Share-based Payment Arrangement, Tranche One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock unit awards granted (in shares)     85,996 123,084    
Restricted stock unit awards grant date fair value (in dollars per share)     $ 0.71 $ 1.25    
Restricted Stock Units (RSUs) - Non-Employee Directors | Share-based Payment Arrangement, Tranche Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock unit awards granted (in shares)     375,000 125,523    
Restricted stock unit awards grant date fair value (in dollars per share)     $ 0.67 $ 1.25    
Vesting period of award     4 years 10 months    
Vesting percentage of award (as a percent)     25.00%      
Restricted Stock Units (RSUs) - Team Members            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock unit awards granted (in shares) 30,000 12,000   746,000    
Restricted stock unit awards grant date fair value (in dollars per share)   $ 1.68   $ 1.25    
Vesting period of award 4 years 4 years   42 months    
Vesting percentage of award (as a percent) 25.00% 25.00%        
Restricted Stock Units (RSUs) - Non-Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock unit awards granted (in shares)   155,000 250,000 630,000    
Restricted stock unit awards grant date fair value (in dollars per share) $ 0.85 $ 1.52 $ 0.67 $ 0.88 $ 0.85  
Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Aggregate intrinsic value of options $ 88       $ 88 $ 7,619
Total fair value for options         130 348
Unrecognized compensation expense $ 80       $ 80 $ 221
Straight-line basis over weighted average period         1 year 2 months 12 days  
2018 Equity Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Issuance of common stock shares (in shares)         1,209,314,000  
Common stock reserved for issuance (in shares) 2,551,720       2,551,720 205,206
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%  
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%  
2009 Equity Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period of award         4 years  
Expiration period         10 years  
Unvested shares (in shares) 574       574 6,219
Accrued expenses $ 1       $ 1 $ 3
Unamortized fair value of the restricted stock units $ 2,135       $ 2,135 $ 6,328
Amortization period of restricted stock cost         2 years 9 months 18 days