Note 10 - Incentive and Retirement Plans (Details Textual)	9 Months Ended
Sep. 30, 2024 shares
Employee Incentive Plan, Percentage Of Compensation In Lieu Of Cash	50.00%
Management Incentive Plan, Percentage Of Compensation In Lieu Of Cash	50.00%
Employee 2015 Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant	148,877

Percentage of incentive compensation in lieu of cash for employee incentive plans.

No definition available.

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- Definition

Percentage of management compensation in lieu of cash for an employee stock plan.

+ References

No definition available.

+ Details

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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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
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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- Details

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