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Capital Stock, Stock Plans and Stock-Based Compensation (Details Narrative) - USD ($) |  |  |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 21, 2022 | Apr. 02, 2019 | Jul. 27, 2017 | May 31, 2018 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock, par value |  |  |  |  | $ 0.001 |  | $ 0.001
Proceeds from stock options exercised |  |  |  |  | $ 13,000 |  |
Common Stock [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  | $ 3.97 |  |
Issuance of common stock upon exercise of options |  |  |  |  | 16,526 |  |
Number of stock option purchased |  |  |  |  | 50,000 |  |
Ferguson Stock Option [Member] | Second Milestone [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Options to purchase shares |  |  | 30,000 |  |  |  |
Ferguson Stock Option [Member] | Third Milestone [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Options to purchase shares |  |  | 60,000 |  |  |  |
Share-Based Payment Arrangement, Option [Member] | Common Stock [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  | $ 5.50 |  |
Issuance of common stock upon exercise of options |  |  |  |  | 2,400 |  |
Number of stock option purchased |  |  |  |  | 2,400 |  |
Proceeds from stock options exercised |  |  |  |  | $ 13,000 |  |
Robert Ferguson [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issuance of common stock upon exercise of options |  |  |  | 10,000 |  |  |
Unrecognized compensation cost related to unvested options consultant |  |  |  |  | $ 289,000 |  |
Remaining stock option |  |  |  |  | 90,000 |  |
Loans payable |  | $ 2,500,000 |  |  |  |  |
Warrant to purchase |  | 60,000 |  |  |  |  |
Warrants exercise price |  | $ 3.51 |  |  |  |  |
Warrant exercisable, description |  | The warrant expires on April 1, 2024 and remains outstanding at September 30, 2022. Upon Mr. Ferguson’s death, the warrant is now held by Mr. Ferguson’s estate. The Ferguson Loan was paid-in-full in December 2020. |  |  |  |  |
Employee and Directors [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized compensation cost related to unvested options consultant |  |  |  |  | $ 1,396,000 |  |
Weighted average term for unrecognized and unvested option to be recognized |  |  |  |  | 3 years 9 months 18 days |  |
2003 Stock Option Plan [Member] | Dr. Louis Centofanti [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Number of stock option shares granted | 10,000 |  |  |  |  |  |
Common stock, par value | $ 0.001 |  |  |  |  |  |
Stok option granted contractual term (years) | 10 years |  |  |  |  |  |
Annual vesting, description | one-fourth vesting annually over a four-year period. |  |  |  |  |  |
Stock options, exercise price | $ 5.15 |  |  |  |  |  |
2017 Stock Option Plan [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Number of stock option shares granted | 24,000 |  |  |  |  |  |
Stok option granted contractual term (years) | 6 years |  |  |  |  |  |
Stock options, exercise price | $ 5.34 |  |  |  |  |  |
Vesting period | 5 years |  |  |  |  |  |
2017 Stock Option Plan [Member] | Consultant [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Number of stock option shares granted |  |  | 100,000 |  |  |  |
Stock options, exercise price |  |  | $ 3.65 |  |  |  |
2003 Outside Directors Stock Option Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issuance of common stock for services, shares |  |  |  |  | 64,272 |  |
Allocated share-based compensation expense |  |  |  |  | $ 359,000 |  |

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