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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2024
Class Of Stock [Line Items] |
Schedule of Assumptions for Fair Value of Option Grant | In connection with the stock option grants during 2024 and 2023, the fair value of each option grant was estimated on the date of the grant using the Black-Scholes option pricing model with the following assumptions:
|  | 2024 |  | 2023
Risk-free interest rate |  | 4% |  | 4%
Expected life (years) |  | 7 |  | 7
Expected volatility |  | 73% |  | 65%
Expected dividend yield |  | Zero |  | Zero
Schedule of Changes in Common Stock Options | The following summarizes the changes in common stock options:
|  | 2024 |  |  | 2023 |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value (In thousands) |  |  | Options |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value (In thousands) |
Outstanding at beginning of year |  |  | 2,265,350 |  |  | $ | 1.71 |  |  |  |  |  |  | 2,027,350 |  |  | $ | 1.38 |  |  |  |
Granted |  |  | 112,500 |  |  |  | 2.01 |  |  |  |  |  |  | 470,000 |  |  |  | 2.91 |  |  |  |
Exercised |  |  | (125,000 | ) |  |  | 0.83 |  |  |  |  |  |  | (102,125 | ) |  |  | 0.86 |  |  |  |
Forfeited |  |  | (21,250 | ) |  |  | 1.88 |  |  |  |  |  |  | (129,875 | ) |  |  | 1.72 |  |  |  |
Outstanding at end of year |  |  | 2,231,600 |  |  | $ | 1.77 |  |  | $ | 971 |  |  |  | 2,265,350 |  |  | $ | 1.71 |  |  | $ | 2,580 |
Options exercisable at year end |  |  | 1,536,725 |  |  | $ | 1.48 |  |  | $ | 926 |  |  |  | 1,275,225 |  |  | $ | 1.02 |  |  | $ | 2,042 |
Weighted-average fair value of options granted during the year |  |  |  |  | $ | 1.46 |  |  |  |  |  |  |  |  | $ | 2.91 |  |  |  |
Schedule of Information about All Stock Options Outstanding | The following table summarizes information about all stock options outstanding as of December 31, 2024:
Exercise price |  | Options Outstanding |  |  | Weighted Average Remaining Life (years) |  |  | Weighted Average Exercise Price |  |  | Number Exercisable |  |  | Weighted Average Remaining Life (years) |  |  | Weighted Average Exercise Price |
$ 0.40 to $ 0.53 |  |  | 432,850 |  |  |  | 2.1 |  |  | $ | 0.45 |  |  |  | 432,850 |  |  |  | 2.1 |  |  | $ | 0.45 |
$ 0.70 to $ 0.85 |  |  | 180,625 |  |  |  | 4.5 |  |  | $ | 0.73 |  |  |  | 180,625 |  |  |  | 4.5 |  |  | $ | 0.73 |
$ 1.37 to $ 1.90 |  |  | 860,625 |  |  |  | 6.9 |  |  | $ | 1.66 |  |  |  | 582,000 |  |  |  | 6.4 |  |  | $ | 1.65 |
$ 2.39 to $ 3.55 |  |  | 757,500 |  |  |  | 7.6 |  |  | $ | 2.90 |  |  |  | 341,250 |  |  |  | 6.8 |  |  | $ | 2.88 |
|  |  | 2,231,600 |  |  |  |  |  |  |  |  |  | 1,536,725 |  |  |  |  |  |  |
Schedule of stock based compensation expense | The following summarizes the restricted stock awards and related stock based compensation expense in 2024 and 2023 (in thousands, except share count and award fair value):
|  |  |  |  |  |  |  | Compensation Expense for the year ended, |  | Unrecognized Compensation Expense as of, |
|  | Grant Date | Vesting Date | Restricted Stock Granted |  | Grant Date Fair Value |  | 2023 |  | 2024 |  | December 31, 2024 |
Ludwig Employment Agreements |  | June 1, 2018 | May 31, 2023 |  | 600,000 |  | $ | 0.43 |  | $ | 22 |  | $ | — |  | $ | — |
Non-executive directors |  | August 3, 2022 | March 31, 2023 |  | 75,000 |  | $ | 1.58 |  |  | 44 |  |  | — |  |  | — |
Employees |  | March 1, 2023 | March 1, 2024 |  | 97,290 |  | $ | 2.53 |  |  | — |  |  | — |  |  | — |
Non-executive directors |  | March 31, 2023 | March 31, 2024 |  | 90,000 |  | $ | 2.87 |  |  | 176 |  |  | 45 |  |  | — |
Employees |  | March 7, 2024 | March 7, 2025 |  | 128,044 |  | $ | 2.93 |  |  | — |  |  | 308 |  |  | 68 |
Non-executive directors |  | March 7, 2024 | March 7, 2025 |  | 75,000 |  | $ | 2.93 |  |  | — |  |  | 180 |  |  | 40 |
Total |  |  |  |  |  |  |  | $ | 242 |  | $ | 532 |  | $ | 107 |
Other Options Issued [Member] |
Class Of Stock [Line Items] |
Schedule of Stock Options and Other Stock Options Issued |
Other Options |  | 2024 |  |  | 2023 |
Options outstanding, beginning of year |  |  | 383,125 |  |  |  | 383,125 |
Options exercised |  |  | (90,000 | ) |  |  | — |
Options outstanding, end of year |  |  | 293,125 |  |  |  | 383,125 |
The outstanding options vest over four years at exercise prices ranging from $0.70 to $1.78 per share.
2010 Non-Qualified Stock Option Plan [Member] |
Class Of Stock [Line Items] |
Schedule of Stock Options and Other Stock Options Issued |
2010 Plan |  | 2024 |  |  | 2023 |
Options outstanding, beginning of year |  |  | 238,750 |  |  |  | 243,750 |
Options exercised |  |  | (21,250 | ) |  |  | (5,000 | )
Options outstanding, end of year |  |  | 217,500 |  |  |  | 238,750 |
2016 Stock Option Plan [Member] |
Class Of Stock [Line Items] |
Schedule of Stock Options and Other Stock Options Issued |
2016 Plan |  | 2024 |  |  | 2023 |
Options outstanding, beginning of year |  |  | 1,079,850 |  |  |  | 1,255,975 |
Options exercised |  |  | (10,000 | ) |  |  | (91,750 | )
Options forfeited |  |  | (4,000 | ) |  |  | (84,375 | )
Options outstanding, end of year |  |  | 1,065,850 |  |  |  | 1,079,850 |
2022 Stock Option Plan [Member] |
Class Of Stock [Line Items] |
Schedule of Stock Options and Other Stock Options Issued |
2022 Plan |  | 2024 |  |  | 2023 |
Options outstanding, beginning of year |  |  | 563,625 |  |  |  | 144,500 |
Options granted |  |  | 112,500 |  |  |  | 470,000 |
Options exercised |  |  | (3,750 | ) |  |  | (5,375 | )
Options forfeited |  |  | (17,250 | ) |  |  | (45,500 | )
Options outstanding, end of year |  |  | 655,125 |  |  |  | 563,625 |

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