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Note 5 - Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2026
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Three months ended March 31, 2026 |
|  | Outstanding and exercisable |  |  | Non-vested |
|  |  |  |  |  | Weighted-Average |  |  |  |  |  |  | Weighted-Average |
|  | Shares |  |  | Exercise Price |  |  | Shares |  |  | Exercise Price |
Balance at beginning of period |  |  | 288,092 |  |  | $ | 10.43 |  |  |  | 440,885 |  |  | $ | 10.45 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited or expired |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance at end of period |  |  | 288,092 |  |  | $ | 10.43 |  |  |  | 440,885 |  |  | $ | 10.45 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Three Months Ended |
|  | March 31, 2026 |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Grant Date |
|  |  |  |  |  | Fair Value |
|  | Number of Shares |  |  | Per Share |
Balance at beginning of period |  |  | 178,526 |  |  | $ | 10.51 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance at end of period |  |  | 178,526 |  |  | $ | 10.51 |
|  | Three Months Ended |
|  | March 31, 2025 |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Grant Date |
|  |  |  |  |  | Fair Value |
|  | Number of Shares |  |  | Per Share |
Balance at beginning of period |  |  | 245,766 |  |  | $ | 10.51 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance at end of period |  |  | 245,766 |  |  | $ | 10.51 |
Share-Based Payment Arrangement, Cost by Plan [Table Text Block] |
|  | Three months ended |
|  | March 31, 2026 |  |  | March 31, 2025 |
|  | (in thousands) |
Stock-based compensation expense |  |  |  |  |  |  |  |
Stock options |  | $ | 156 |  |  | $ | 163 |
Restricted stock awards, net of forfeitures |  |  | 157 |  |  |  | 159 |
Total stock-based compensation expense |  | $ | 313 |  |  | $ | 322 |
Related tax benefits recognized in earnings |  | $ | 67 |  |  | $ | 70 |
Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] |
|  | March 31, 2026 |  |  | December 31, 2025 |
|  |  |  |  |  | Weighted average |  |  |  |  |  |  | Weighted average |
|  | Amount |  |  | period |  |  | Amount |  |  | period |
|  | (Dollars in thousands) |
Stock options |  | $ | 1,612 |  |  |  | 2.56 |  |  | $ | 1,767 |  |  |  | 2.80 |
Restricted stock awards |  |  | 1,592 |  |  |  | 2.55 |  |  |  | 1,749 |  |  |  | 2.80 |
Total |  | $ | 3,204 |  |  |  |  |  |  | $ | 3,516 |  |  |  |  |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (i) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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