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Note 8 - Options: Schedule of Share-based Compensation, Stock Options, Activity (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures | 19,000 | 21,000 | 0
Price Range Per Share Granted | 77.07 - 77.07 | 82.60 - 82.60 | - - -
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period | 400 | 2,000 | 3,000
Price Range Per Share Expired | 77.05 - 77.05 | 33.30 - 77.05 | 74.64 - 77.05
Price Range Per Share Exercised | 49.18 - 77.05 | 33.30 - 77.05 | 26.52 - 77.05
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number | 84,000 | 67,000 | 52,000
Price Range Per Share Outstanding | 49.18 - 82.60 | 33.30 - 77.05 | 33.30 - 77.05
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number | 50,000 | 40,000 | 34,000
Price Range Per Share Total Exercisable | 49.18 - 82.60 | 33.30 - 77.05 | 33.30 - 77.05
Common Stock |  |  |
Common stock issued upon exercise of employee stock options, shares | 2,000 | 4,000 | 14,000

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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