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Stock Options and Restricted Stock Units - Additional Information (Details) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 07, 2022 USD ($) installment $ / shares shares | Sep. 30, 2022 USD ($) shares | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Compensation cost related to non-vested stock options and restricted stock awards not yet recognized | $ |  | $ 5.9 | $ 5.9 |
Weighted-average period over which compensation cost recognized |  |  | 24 months |
Grant date fair value | $ / shares |  |  | $ 3.00 | $ 3.56
Subsequent event |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) | 1,143,000 |  |  |
Exercise price of stock options granted | $ / shares | $ 3.41 |  |  |
Stock options vesting period | 10 years |  |  |
Stock options vesting in number of installments | installment | 3 |  |  |
Grant date fair value | $ | $ 2.5 |  |  |
Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of shares, granted |  | 0 | 700,000 |
Compensation cost related to non-vested stock options and restricted stock awards not yet recognized | $ |  | $ 2.8 | $ 2.8 |
Weighted-average period over which compensation cost recognized |  |  | 22 months |
Number of shares eligible to receive for each fully vested RSU |  |  | 1 |
2013 Stock Plan | Subsequent event |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) | 295,000 |  |  |
2013 Stock Plan | Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of shares, granted |  |  | 200,000 |
2013 Stock Plan | Employee Stock Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) |  |  | 1,479,558 | 750,000
Exercise price of stock options granted | $ / shares |  |  | $ 5.21 | $ 6.76
2021 Stock Plan | Subsequent event |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) | 848,000 |  |  |
2021 Stock Plan | Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of shares, granted |  |  | 500,000 |
2021 Stock Plan | Employee Stock Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) |  |  | 182,000 |
Exercise price of stock options granted | $ / shares |  |  | $ 3.67 |
Equity Plans | Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of shares, granted |  |  | 700,000 |
Non employee director | 2013 Stock Plan | Employee Stock Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of options, granted (in shares) |  |  | 110,000 |
Non employee director | 2021 Stock Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of shares, granted |  |  | 50,000 |
Number of options, granted (in shares) |  |  | 132,000 |

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