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Stockholders' Equity - Additional Information (Details) - USD ($) |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
May 07, 2021 | Apr. 26, 2021 | Apr. 01, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Restricted Stock |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  | 245,224 |
Compensation expense related to stock options |  |  |  | $ 37,000 | $ 10,000 | $ 47,000 | $ 33,000
Unrecognized compensation expense |  |  |  | 84,000 |  | $ 84,000 |
Weighted average period of recognition |  |  |  |  |  | 1 year 9 months |
Restricted Stock | Non Management Directors |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 50,000 |  |  |  |
Award vesting period (in years) |  |  | 2 years |  |  |  |
Restricted Stock | Non Management Directors | April 1, 2022 |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Percentage of options vested per tranche |  |  | 50.00% |  |  |  |
Restricted Stock | Non Management Directors | April 1, 2023 |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Percentage of options vested per tranche |  |  | 50.00% |  |  |  |
Restricted Stock | Consultant |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  | 14,045 |  |  |  |  |
Restricted Stock | Senior Management |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 181,179 |  |  |  |  |  |
Management Stock Bonus |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Compensation expense related to stock options |  |  |  | 354,000 |  |  | 291,000
Reduction to compensation expense |  |  |  |  |  | $ 8,000 |
Warrant |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |
Compensation expense related to stock options |  |  |  | $ 0 | $ 0 | $ 0 | $ 0

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