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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Property, Plant and Equipment, Useful Life [Table Text Block] |
Buildings (in years) |  |  |  | 25
Machinery and equipment (in years) |  | 5 | - | 15
Office furniture and equipment (in years) |  | 2 | - | 7
Leasehold improvements (in years) |  | 4 | - | 5
Software (in years) |  |  |  | 5
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Years Ended December 31, |
|  | 2025 |  |  | 2024 |
Net income (numerator) |  | $ | 3,531,000 |  |  | $ | 3,929,000 |
Shares (denominator): |  |  |  |  |  |  |  |
Basic weighted average common shares outstanding |  |  | 10,444,663 |  |  |  | 11,137,873 |
Add: Dilutive effect of common stock options |  |  | 105,776 |  |  |  | 97,173 |
Diluted weighted average common shares outstanding |  |  | 10,550,439 |  |  |  | 11,235,046 |
Earnings per common share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.34 |  |  | $ | 0.35 |
Diluted |  | $ | 0.33 |  |  | $ | 0.35 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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