SEGMENTS OF BUSINESS (Schedule Of Operations By Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 03, 2025	Jun. 27, 2025	Mar. 28, 2025	Dec. 27, 2024	Sep. 27, 2024	Jun. 28, 2024	Mar. 29, 2024	Dec. 29, 2023	Oct. 03, 2025	Sep. 27, 2024	Sep. 29, 2023
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 135,762	$ 180,655	$ 168,349	$ 107,649	$ 105,874	$ 172,472	$ 175,856	$ 138,644	$ 592,415	$ 592,846	$ 663,844
Total assets	604,103				635,212				604,103	635,212	681,606
Long-term assets	192,241				183,063				192,241	183,063
United States:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									516,567	513,978	569,383
Total assets	478,102				520,834				478,102	520,834
Long-term assets	176,136				174,106				176,136	174,106
Europe:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									34,952	34,406	39,155
Total assets	54,810				52,486				54,810	52,486
Long-term assets	5,855				6,468				5,855	6,468
Canada:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									28,448	31,502	39,465
Total assets	39,151				38,431				39,151	38,431
Long-term assets	1,134				1,162				1,134	1,162
Other:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									12,449	12,959	15,841
Total assets	32,040				23,461				32,040	23,461
Long-term assets	$ 9,116				$ 1,327				9,116	1,327
Interunit transfers
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									(35,277)	(29,563)	(43,757)
Interunit transfers | United States:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									(22,333)	(20,958)	(33,873)
Interunit transfers | Europe:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									(9,231)	(8,456)	(9,866)
Interunit transfers | Canada:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									0	(93)	0
Interunit transfers | Other:
Schedule of Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ (3,712)	$ (57)	$ (18)