Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
AOCI Attributable to Parent [Member] |
Treasury Stock, Common [Member] |
Total |
|---|---|---|---|---|---|---|
| Balance (in shares) at Dec. 28, 2024 | 14,661,487 | |||||
| Balance at Dec. 28, 2024 | $ 146,615 | $ 40,580,387 | $ (25,890,245) | $ 15,500 | $ (340,138) | $ 14,512,119 |
| Share-based compensation expense | 0 | 122,186 | 0 | 0 | 0 | 122,186 |
| Net unrealized gains (losses) on available for sale securities | 0 | 0 | 0 | 2,037 | 0 | $ 2,037 |
| Employee option exercises (in shares) | 0 | |||||
| Net income (loss) | 0 | 0 | 95,962 | 0 | 0 | $ 95,962 |
| Reclassification adjustment for gains included in net income | $ 0 | 0 | 0 | (16,237) | 0 | (16,237) |
| Balance (in shares) at Mar. 29, 2025 | 14,661,487 | |||||
| Balance at Mar. 29, 2025 | $ 146,615 | 40,702,573 | (25,794,283) | 1,300 | (340,138) | 14,716,067 |
| Balance (in shares) at Dec. 27, 2025 | 18,132,767 | |||||
| Balance at Dec. 27, 2025 | $ 181,320 | 50,295,019 | (25,469,891) | 139 | (371,313) | 24,635,274 |
| Share-based compensation expense | 0 | 48,249 | 0 | 0 | 0 | 48,249 |
| Net unrealized gains (losses) on available for sale securities | $ 0 | 0 | 0 | (4,757) | 0 | $ (4,757) |
| Employee option exercises (in shares) | 19,000 | 19,000 | ||||
| Employee option exercises | $ 190 | 33,813 | (3,393) | $ 30,610 | ||
| Net income (loss) | $ 0 | 0 | (294,179) | 0 | 0 | (294,179) |
| Reclassification adjustment for gains included in net income | 0 | |||||
| Balance (in shares) at Mar. 28, 2026 | 18,151,767 | |||||
| Balance at Mar. 28, 2026 | $ 181,510 | $ 50,377,081 | $ (25,764,070) | $ (4,618) | $ (374,706) | $ 24,415,197 |
| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, before tax and adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares issued which are neither cancelled nor held in the treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Value of stock issued as a result of the exercise of stock options. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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