Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Option Activity (Details)

v3.21.1
Stock-Based Compensation - Stock Option Activity (Details) - Options - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Number of shares, beginning outstanding (in shares) 1,208,740  
Number of shares, exercised (119,268)  
Number of shares, forfeited (2,439)  
Number of shares, ending outstanding (in shares) 1,087,033 1,208,740
Number of shares, exercisable (in shares) 991,476  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Weighted average exercise price, beginning outstanding (in dollars per share) $ 0.80  
Weighted average exercise price, released (in dollars per share) 0.55  
Weighted average exercise price, forfeited (in dollars per share) 2.31  
Weighted average exercise price, ending outstanding (in dollars per share) 0.82 $ 0.80
Weighted average exercise price, exercisable (in dollars per share) $ 0.78  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Weighted average remaining contractual term 6 years 4 months 17 days 6 years 2 months 8 days
Weighted average remaining contractual term, exercisable (in years) 6 years 3 months 29 days  
Share-Based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract]    
Aggregate intrinsic value $ 986 $ 700
Aggregate intrinsic value, exercisable $ 926