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Stock-Based Compensation - Narrative (Details)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
equityCompensationPlan
$ / shares
shares
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2023
USD ($)
equityCompensationPlan
$ / shares
shares
Jun. 30, 2022
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense | $ $ 15.0   $ 15.0  
Unrecognized compensation expense related to options outstanding, weighted average period for expense to be recognized     1 year 9 months 18 days  
Number of equity compensation plans | equityCompensationPlan 2   2  
Options, grants in period, weighted average grant date fair value (in USD per share) | $ / shares $ 0.43 $ 1.96 $ 0.88 $ 3.26
Options, vested in period, fair value | $ $ 2.5 $ 1.1 $ 8.1 $ 4.0
2014 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for grant (in shares) | shares 0.8   0.8  
2019 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for grant (in shares) | shares 28.4   28.4