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Note E - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 28, 2024 | Jun. 28, 2025 | Sep. 30, 2023 | Jun. 28, 2025 | Sep. 27, 2025 | Sep. 28, 2024 | Sep. 30, 2023 | Dec. 28, 2024
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) |  |  |  |  | $ 2,257 | $ 0 | $ 1,678 |
Intangible Assets Acquired |  |  |  |  | 0 |  | 0 |
Amortization of Intangible Assets |  |  |  |  | $ 7,300 | 7,200 | 6,500 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two |  |  |  |  |  |  |  | $ 5,600
Finite-Lived Intangible Asset, Expected Amortization, Year Three |  |  |  |  |  |  |  | 4,700
Finite-Lived Intangible Asset, Expected Amortization, Year Four |  |  |  |  |  |  |  | 4,300
Finite-Lived Intangible Asset, Expected Amortization, Year Five |  |  |  |  |  |  |  | $ 4,200
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  |  |  | 10 years |  |  |
Goodwill, Impairment Loss |  |  |  |  | $ 0 | 0 | 0 |
Goodwill, Acquired During Period |  |  |  |  | $ 0 | 0 |  |
Customer Relationships [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  |  |  | 10 years |  |  |
Technology-Based Intangible Assets [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  |  |  | 10 years |  |  |
License and Rights [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  |  |  | 20 years |  |  |
Franchise Rights [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  |  |  | 10 years |  |  |
Thinsters Cookie Business [Member] |  |  |  |  |  |  |  |
Intangible Assets Acquired |  |  |  |  |  | 5,900 |  |
Amortization of Intangible Assets | $ 5,900 |  |  |  |  |  |  |
Thinsters Cookie Business [Member] | Trade Names [Member] |  |  |  |  |  |  |  |
Amortization of Intangible Assets | $ 5,300 |  |  |  |  | $ 5,300 |  |
Thinsters Cookie Business [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |  |  |  |  | 10 years |  |
Amortization of Intangible Assets | $ 700 |  |  |  |  | $ 700 |  |
Dippin’ Dots Holding, L.L.C. [Member] |  |  |  |  |  |  |  |
Goodwill, Acquired During Period |  |  |  |  |  |  | $ 700 |
Trade Names [Member] |  |  |  |  |  |  |  |
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) |  | $ 1,500 | $ 1,700 | $ 800 |  |  |  |
Trade Names [Member] | Food Service [Member] |  |  |  |  |  |  |  |
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) |  | $ 1,500 | $ 1,700 | $ 800 |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |  |  |  | 10 years | 2 years |  |
Maximum [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 20 years |  |  |

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