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Note 11 - Stock-based Compensation Plan - Stock Option Activity (Details) (Parentheticals) | Sep. 30, 2024 shares
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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares) | 171,735
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares) | 262,310

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant