XML 66 R56.htm IDEA: XBRL DOCUMENT v3.21.2
Stock Compensation - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Apr. 29, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock compensation expense $ 0.8 $ 1.4 $ 2.6 $ 2.8  
Total unrecognized compensation cost related to non-vested share based compensation arrangements $ 5.7   $ 5.7    
Unrecognized compensation cost period for recognition     3 years    
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Period of expiration, term     10 years    
2017 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized for grant under plan (in shares) 5,126,950   5,126,950   0
2021 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized for grant under plan (in shares)         2,000,000