XML 60 R49.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jul. 09, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jul. 10, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Weighted average grant date fair value of options granted   $ 5.47   $ 4.85                        
Total fair value of options vested   $ 202   $ 300                        
Total unrecognized compensation expense   $ 2,496   $ 2,496                        
Total unrecognized compensation expense, weighted-average period of recognition       2 years 9 months 18 days                        
Dividends   0.00%   0.00%                        
Common stock, shares authorized   150,000,000   150,000,000                     150,000,000 150,000,000
Stock-based compensation expense   $ 1,573 $ 3,749 $ 5,323 $ 3,837                      
2020 Employee Stock Purchase Plan                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Common stock reserved for issuance   316   316                        
Percentage of outstanding shares of common stock       1.00%                        
Exercise price of option on fair value (as a percent)       85.00%                        
Common stock, shares authorized   340   340                        
Shares of common stock have been issued to employees       24                        
ISOs and NSOs | Minimum                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Vesting period       1 year                        
ISOs and NSOs | Minimum | Share-based Payment Arrangement, Tranche One                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Exercise price of option on fair value (as a percent)       100.00%                        
ISOs and NSOs | Maximum                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Term of contract       10 years                        
Vesting period       4 years                        
ISOs and NSOs | Maximum | Share-based Payment Arrangement, Tranche One                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Term of contract       10 years                        
Incentive Stock Options | Share-based Payment Arrangement, Tranche Two                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Award vesting percentage       10.00%                        
Incentive Stock Options | Minimum | Share-based Payment Arrangement, Tranche Two                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Exercise price of option on fair value (as a percent)       110.00%                        
Incentive Stock Options | Maximum | Share-based Payment Arrangement, Tranche Two                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Term of contract       5 years                        
Restricted Stock Awards                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Total unrecognized compensation expense, weighted-average period of recognition       1 year 1 month 6 days                        
Total fair value of restricted stock awards vested   $ 1,235   $ 6,182                        
Total unrecognized compensation expense   $ 8,671   $ 8,671                        
Restricted Stock Awards | Forecast                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Number of restricted stock awards are expected to vest           75 180 136 237 113 113 140 338 120    
2020 Incentive Award Plan                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Common stock reserved for issuance 3,333 3,880   3,880                        
Percentage of outstanding shares of common stock 5.00%                              
PDL Equity Incentive Plan                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Total fair value of restricted stock awards vested       $ 0 65                      
PDL Equity Incentive Plan | PDL Award                                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                
Stock-based compensation expense   $ 0 $ 15 $ 0 $ 53