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v3.23.1

Equity (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
Schedule of Outstanding, Reserved and Authorized Shares under Share-based Compensation Plans | ​
​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
(in thousands) |  | 2023 |  | 2022
Outstanding options and restricted stock units |  | 3,332 |  | 3,202
Reserved but unissued shares under the Plans | ​ | 2,530 | ​ | 2,777
Total authorized shares under the Plans |  | 5,862 |  | 5,979
​
Schedule of stock option activity | A summary of the Company’s stock option activity and changes is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31,
​ | ​ | 2023
(in thousands) | ​ | Options to Purchase Common Stock | ​ | Weighted Average Exercise Price | ​ | Weighted Average Remaining Contractual Life (in years)
Outstanding at beginning of year |  | 2,779 | ​ | $ | 2.05 |  | 6.43
Granted |  | — | ​ | $ | — |  | —
Exercised |  | — | ​ | $ | — |  | —
Forfeited/Expired |  | — | ​ | $ | — |  | —
Outstanding at end of period |  | 2,779 | ​ | $ | 2.05 |  | 6.18
Exercisable at end of period |  | 2,011 | ​ | $ | 1.70 |  | 5.68
​
Schedule of share-based compensation activity | ​
​ | ​ | ​ | ​
​ | ​ | March 31,
(in thousands) |  | 2023
Reserved but unissued shares at beginning of year | ​ | ​ | 196
Increases in the number of authorized shares | ​ | ​ | 5
Grants | ​ | ​ | (4)
Reserved but unissued shares at end of year | ​ |  | 197
​
Schedule of restricted stock unit activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31,
​ | ​ | 2023
(in thousands) | ​ | Number of Shares | ​ | Weighted Average Grant Date Fair Value
Nonvested at beginning of year |  | 423 | ​ | $ | 1.49
Granted |  | 374 | ​ | $ | 0.69
Vested |  | (245) | ​ | $ | 1.34
Nonvested at end of period |  | 552 | ​ | $ | 1.01
​
Restricted Stock Units |
Schedule of Compensation Expense | ​
​ | ​ | ​ | ​ | ​ | ​
​ | For the Three Months Ended
​ | March 31,
(in thousands) | 2023 |  | 2022
Compensation Expense | $ | 199 | $ | 35 | ​
Weighted Average Value Per Share | $ | 1.25 | $ | 1.44 | ​
​
Warrant [Member] |
Schedule of Compensation Expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2023 |  | 2022
Fair value | ​ | $ | 234 | ​ | $ | 98
Weighted Average Value Per Share | ​ | $ | 0.79 | ​ | $ | 1.43
Consultant Stock Plan |
Schedule of Compensation Expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2023 |  | 2022
Compensation Expense | ​ | $ | 3 | ​ | $ | 7
Weighted Average Value Per Share | ​ | $ | 0.66 | ​ | $ | 1.93

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