Annual report pursuant to Section 13 and 15(d)

Stock-Based Incentive Plans - Restricted and Performance Stock Units Narrative (Details)

v3.22.0.1
Stock-Based Incentive Plans - Restricted and Performance Stock Units Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 16, 2021
Dec. 17, 2019
Dec. 27, 2018
Dec. 18, 2017
Jul. 31, 2020
Jun. 30, 2020
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jul. 17, 2020
Mar. 16, 2020
RSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period (in years)                     4 years        
Total fair value of restricted stock vested                     $ 4,481 $ 3,811 $ 1,467    
RSUs | Directors And Certain Executive Officers                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period (in years)                     3 years        
RSUs | Directors And Certain Executive Officers | Tranche One                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period (in years)                     1 year        
PSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period (in years)                     3 years        
Unrecognized compensation expense             $ 484       $ 484        
PSU - BLA Milestones                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Shares authorized for issuance (in shares)   378,863                          
Shares available (in shares)             298,587       298,587        
PSU - BLA Milestones | Tranche One                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting percentage   50.00% 50.00%                        
PSU - BLA Milestones | Tranche Two                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period (in years)   1 year 1 year                        
Vesting percentage   50.00% 50.00%                        
2017 PSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Shares authorized for issuance (in shares)       114,700                      
Achievement of award issued (as a percent)       72.30%                      
Percentage of stock compensation       27.70%                      
Value of grants reversed                   $ 536          
2018 PSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Shares authorized for issuance (in shares)     130,400                        
Value of grants reversed                       $ 1,161      
2020 PSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Shares authorized for issuance (in shares)                           144,300 357,000
Achievement of award issued (as a percent)         110.00%       50.00%            
Value of grants reversed           $ 340   $ 804              
2021 PSUs                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Shares authorized for issuance (in shares) 332,200                            
Value of grants reversed             $ 1,831                
2021 PSUs | Minimum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance stock unit, payout opportunity 0.00%                            
2021 PSUs | Maximum                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance stock unit, payout opportunity 200.00%