Note 12 - Goodwill and Intangible Assets - Intangible Assets by Reporting Segment (Details) - USD ($) $ in Thousands	Jun. 28, 2025	Sep. 28, 2024
Finite-lived intangible assets, accumulated amortization	$ 30,120	$ 24,234
Intangible assets	204,981	206,490
Food Service [Member]
Finite-lived intangible assets, accumulated amortization	27,849	22,108
Intangible assets	144,789	146,298
Retail Supermarket [Member]
Finite-lived intangible assets, gross	11,938	11,938
Finite-lived intangible assets, accumulated amortization	0	0
Frozen Beverages [Member]
Finite-lived intangible assets, gross	48,254	48,254
Finite-lived intangible assets, accumulated amortization	2,271	2,126
Trade Names [Member] \| Food Service [Member]
Indefinite-lived intangible assets, gross	85,424	85,424
Finite-lived intangible assets, gross	2,515	4,024
Finite-lived intangible assets, accumulated amortization	2,515	1,006
Trade Names [Member] \| Retail Supermarket [Member]
Finite-lived intangible assets, gross	11,938	11,938
Finite-lived intangible assets, accumulated amortization	0	0
Trade Names [Member] \| Frozen Beverages [Member]
Finite-lived intangible assets, accumulated amortization	0	0
Intangible assets	9,315	9,315
Noncompete Agreements [Member] \| Food Service [Member]
Finite-lived intangible assets, gross	8,500	8,500
Finite-lived intangible assets, accumulated amortization	2,550	1,913
Customer Relationships [Member] \| Food Service [Member]
Finite-lived intangible assets, gross	23,550	23,550
Finite-lived intangible assets, accumulated amortization	14,151	12,369
Customer Relationships [Member] \| Frozen Beverages [Member]
Indefinite-lived intangible assets, gross	1,439	1,439
Finite-lived intangible assets, accumulated amortization	937	844
Developed Technology Rights [Member] \| Food Service [Member]
Finite-lived intangible assets, gross	23,110	23,110
Finite-lived intangible assets, accumulated amortization	6,920	5,170
License and Rights [Member] \| Food Service [Member]
Finite-lived intangible assets, gross	1,690	1,690
Finite-lived intangible assets, accumulated amortization	1,713	1,650
License and Rights [Member] \| Frozen Beverages [Member]
Finite-lived intangible assets, gross	1,400	1,400
Finite-lived intangible assets, accumulated amortization	1,334	1,282
Distribution Rights [Member] \| Frozen Beverages [Member]
Indefinite-lived intangible assets, gross	$ 36,100	$ 36,100

J&J SNACK FOODS CORP 10-Q