Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Option Activity (Details)

v3.21.2
Stock-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2020
Number of Shares      
Number of shares, beginning outstanding (in shares)   1,208,740  
Number of shares, granted (in shares) 50,000 0  
Number of shares, exercised (in shares)   (132,396)  
Number of shares, forfeited (in shares)   (8,647)  
Number of shares, ending outstanding (in shares) 1,067,697 1,067,697 1,208,740
Number of shares, exercisable (in shares) 1,019,321 1,019,321  
Weighted Average Exercise Price      
Weighted average exercise price, beginning outstanding (in dollars per share)   $ 0.80  
Weighted average exercise price, granted (in dollars per share) $ 1.08 0  
Weighted average exercise price, released (in dollars per share)   0.55  
Weighted average exercise price, forfeited (in dollars per share)   2.13  
Weighted average exercise price, ending outstanding (in dollars per share) 0.82 0.82 $ 0.80
Weighted average exercise price, exercisable (in dollars per share) $ 0.79 $ 0.79  
Weighted Average Remaining Contractual Term (years)      
Weighted average remaining contractual term   5 years 10 months 17 days 6 years 2 months 8 days
Weighted average remaining contractual term, exercisable (in years)   5 years 10 months 6 days  
Aggregate Intrinsic Value      
Aggregate intrinsic value $ 303 $ 303 $ 700
Aggregate intrinsic value, exercisable $ 295 $ 295