Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock Option Activity (Details)

v3.21.2
Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Shares      
Beginning balance (in shares) 700,475   725,864
Options granted (in shares) 24,437    
Options exercised (in shares) (40,000) (120,000)  
Options forfeited (in shares) (9,826)    
Options outstanding, ending balance (in shares) 700,475   725,864
Options exercisable (in shares) 534,638    
Weighted Average Exercise Price      
Options outstanding, beginning balance (in dollars per share) $ 13.25    
Options granted (in dollars per share) 23.24    
Options exercised (in dollars per share) 5.20    
Options forfeited (in dollars per share) 3.89    
Options outstanding, ending balance (in dollars per share) 14.18   $ 13.25
Options exercisable (in dollars per share) $ 9.71    
Weighted Average Remaining Contractual Term (Years)      
Options outstanding 3 years 2 months 4 days   3 years 9 months
Options exercisable 2 years 2 months 26 days    
Aggregate Intrinsic Value (in thousands)      
Options outstanding $ 53,800   $ 3,400
Options exercised 2,800    
Options exercisable $ 41,900