| Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
| | | 2026 | | | | | | | 2025 | | | | | |
| Net Income Before Taxes | | $ | 1,096,000 | | | | | | | $ | 993,000 | | | | | |
| | | | | | | | | | | | | | | | | |
| Provision at statutory rate | | | 230,000 | | | | 21.0 | % | | | 208,000 | | | | 21.0 | % |
| State Tax Provision net of federal benefit | | | 36,000 | | | | 3.3 | % | | | 36,000 | | | | 3.7 | % |
| Permanent Book/Tax Differences | | | 3,000 | | | | 0.2 | % | | | 3,000 | | | | 0.3 | % |
| True-Up & Adjustments | | | 20,000 | | | | 1.8 | % | | | (69,000 | ) | | | -6.9 | % |
| Income Tax Provision | | | 289,000 | | | | 26.3 | % | | | 178,000 | | | | 18.1 | % |
| Effective income tax rate | | | | | | | | | | | | | | | | |
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| Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
| Deferred Tax Asset: | | 2026 | | | 2025 | |
| Accrued Liabilities | | $ | 88,000 | | | $ | 65,000 | |
| Inventory Allowance | | | 1,226,000 | | | | 1,211,000 | |
| Allowance for Sales Reserve | | | 64,000 | | | | 76,000 | |
| Net Operating Loss Carryforwards | | | 1,061,000 | | | | 1,589,000 | |
| Capitalized R&D | | | 36,000 | | | | 56,000 | |
| R&D Credit Carryforward | | | 50,000 | | | | 50,000 | |
| Unrealized Gains | | | 19,000 | | | | (94,000 | ) |
| MEI accrual to cash | | | (45,000 | ) | | | (90,000 | ) |
| Net book value of intangible assets | | | (657,000 | ) | | | (696,000 | ) |
| Prepaid expenses | | | (30,000 | ) | | | (26,000 | ) |
| Net Book Value of Fixed Assets | | | (480,000 | ) | | | (519,000 | ) |
| Total Deferred Tax Assets | | | 1,332,000 | | | | 1,622,000 | |
| Valuation allowance | | | - | | | | - | |
| | | $ | 1,332,000 | | | $ | 1,622,000 | |
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