Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Additional Information (Details)

v3.21.2
Stock Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares authorized (in shares) 8,000,000  
Shares available for grant (in shares) 5,300,000 6,600,000
Stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense $ 2.9  
Unrecognized compensation expense, recognition period 2 years 9 months 18 days  
Restricted stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense $ 10.4  
Unrecognized compensation expense, recognition period 2 years 8 months 12 days