Goodwill And Intangible Assets (Components Of Intangible Assets) (Details) - USD ($) $ in Thousands	Jan. 03, 2026	Sep. 27, 2025
Finite-Lived Intangible Assets
Weighted- Average Life (years)	12 years
Gross Carrying Amount	$ 276,023	$ 271,701
Accumulated Amortization	$ (212,465)	(205,600)
Customer-related
Finite-Lived Intangible Assets
Weighted- Average Life (years)	11 years
Gross Carrying Amount	$ 133,324	131,967
Accumulated Amortization	$ (103,134)	(100,655)
Technology-related
Finite-Lived Intangible Assets
Weighted- Average Life (years)	9 years
Gross Carrying Amount	$ 78,821	77,172
Accumulated Amortization	$ (60,350)	(57,817)
Program-related
Finite-Lived Intangible Assets
Weighted- Average Life (years)	23 years
Gross Carrying Amount	$ 40,068	39,799
Accumulated Amortization	$ (27,065)	(26,476)
Marketing-related
Finite-Lived Intangible Assets
Weighted- Average Life (years)	8 years
Gross Carrying Amount	$ 22,425	21,387
Accumulated Amortization	$ (20,570)	(19,320)
Other Intangible Assets
Finite-Lived Intangible Assets
Weighted- Average Life (years)	3 years
Gross Carrying Amount	$ 1,385	1,376
Accumulated Amortization	$ (1,346)	$ (1,332)