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Note 11 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 27, 2026	Jun. 28, 2025	Mar. 28, 2026	Jun. 28, 2026	Jun. 28, 2025	Dec. 27, 2025
Intangible Asset, Finite-Lived, Amortization Expense	$ 1.4	$ 1.9		$ 4.2	$ 5.9
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year						$ 1.4
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One						4.7
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two						$ 4.3
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three			$ 4.2
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			10 years
Technology-Based Intangible Assets [Member]
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			10 years
Customer Relationships [Member]
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			10 years
License and Rights [Member]
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			20 years
Franchise Rights [Member]
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			10 years
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	20 years