Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Restricted Stock Awards Activity (Details)

v3.21.2
Stock-Based Compensation - Schedule of Restricted Stock Awards Activity (Details) - Restricted Stock Awards (RSAs) [Member]
9 Months Ended
Sep. 30, 2021
$ / shares
shares
Two Thousand Eighteen Restricted Stock Plan  
Restricted Stock Units  
Beginning balance | shares 286,161
Granted | shares 103,939
Vested | shares (31,388)
Forfeited | shares (50,082)
Ending balance | shares 308,630
Beginning balance | $ / shares $ 4.77
Granted | $ / shares 4.82
Vested | $ / shares 6.96
Forfeited | $ / shares 5.10
Ending balance | $ / shares $ 4.51
Two Thousand Twenty Restricted Stock Plan  
Restricted Stock Units  
Beginning balance | shares 4,375
Vested | shares (625)
Ending balance | shares 3,750
Beginning balance | $ / shares $ 25.50
Vested | $ / shares 25.50
Ending balance | $ / shares $ 25.50