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8. Equity Incentive Plan – Stock-Based Compensation Expense and Common Stock Warrants (Details Narrative) - USD ($) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Jan. 01, 2023 | Jul. 19, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Unrecognized stock based compensation expense |  | $ 700,000 |  |  |
Weighted average period |  | 3 years 1 month 20 days |  |  |
Share based compensation expense |  | $ 644,000 | $ 147,000 |  |
Restricted common stock granted |  | $ 14,000 |  |  |
Underwriter [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Warrants to purchase common stock, shares |  | 3,035,195 |  |  |
Underwriter [Member] | Warrant One [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Warrants to purchase common stock, shares |  | 198,875 |  |  |
Warrant maturity date |  | Aug. 25, 2026 |  |  |
Underwriter [Member] | Warrant Two [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Warrants to purchase common stock, shares |  | 2,588,120 |  |  |
2021 Omnibus Equity Incentive Plan [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of shares reserved |  |  |  |  | 2,185,832
Common shares reserved but unissued |  |  |  |  | 10,832
2021 Omnibus Equity Incentive Plan [Member] | Subsequent Event [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of shares reserved |  |  |  | 272,391 |
2021 Plan [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Restricted common stock granted, shares | 3,500 |  |  |  |
Shares issued price per share | $ 4.03 |  |  |  |
Restricted common stock granted | $ 14,000 |  |  |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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