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Note 4 - Earnings Per Share (Details Textual) - shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Dilutive Securities Included in Computation of Earnings Per Share Amount Stock Option |  |  | 128,665 | 598,489
Dilutive Securities Included in Computation of Earnings Per Share Amount Restricted Stock |  |  | 5,000 | 14,164
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements |  |  | 22,203 | 179,951
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,202,076 | 1,064,656 | 1,073,411 | 466,167
Restricted Stock [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 5,000 | 14,164 |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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