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Note I - Stockholders' Equity (Details Textual) - shares | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Common Stock, Shares Authorized (in shares) | 100,000,000 | 100,000,000 | 85,000,000
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares) | 2,440,673 | 2,066,343 | 2,428,329
Chief Executive Officer, Chief Financial Officer and Employees [Member] |  |  |
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares) | 2,057,976 | 1,891,979 |
Non-Employees [Member] |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 382,697 | 174,364 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. + 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 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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