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Note 8 - Equity Compensation Plans (Details Textual) - USD ($) |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Feb. 04, 2025 | May 18, 2022 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Share-Based Payment Arrangement, Expense |  |  | $ 2,826 |  | $ 2,525 |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  | 540,341 | [1] |  | 509,895
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 331,864 |  |  |
Performance Share Units PSU's [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 194,237 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) | 3 years |  |  |  |  |
Performance Share Units PSU's [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) | 3 years |  |  |  |  |
Performance Share Units PSU's [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) | 1 year |  |  |  |  |
Maximum [Member] | Performance Share Units PSU's [Member] |  |  |  |  |  |
Share-Based Compensation, Percent of Issuable Shares | 150.00% |  |  |  |  |
Minimum [Member] | Performance Share Units PSU's [Member] |  |  |  |  |  |
Share-Based Compensation, Percent of Issuable Shares | 0.00% |  |  |  |  |
Long Term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  | 156,732 |  |  | 149,334
Long Term Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  | 8,000,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Potentially Recycled Into the Stock Plan (in shares) |  | 1,280,610 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  | 4 years |  |  |  |
Long Term Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  | 2 years |  |  |  |
[1] | The outstanding award balances above include 156,732 and 149,334 RSUs as of September 30, 2025 and December 31, 2024, respectively.

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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