Note E - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 24, 2022
Property, plant and equipment, at cost	$ 960,198	$ 860,050
Less accumulated depreciation and amortization	574,295	524,683
Property, plant and equipment, net	385,903	335,367
Land [Member]
Property, plant and equipment, at cost	3,684	3,714
Building [Member]
Property, plant and equipment, at cost	$ 45,538	34,232
Building [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life (Year)	15 years
Building [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life (Year)	39 years 6 months
Machinery and Equipment [Member]
Property, plant and equipment, at cost	$ 445,299	374,566
Machinery and Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life (Year)	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life (Year)	20 years
Equipment [Member]
Property, plant and equipment, at cost	$ 296,482	274,904
Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life (Year)	5 years
Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life (Year)	7 years
Transportation Equipment [Member]
Property, plant and equipment, at cost	$ 14,367	11,685
Property, plant and equipment, estimated useful life (Year)	5 years
Office Equipment [Member]
Property, plant and equipment, at cost	$ 47,393	45,865
Office Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life (Year)	3 years
Office Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life (Year)	5 years
Improvements [Member]
Property, plant and equipment, at cost	$ 51,319	49,331
Improvements [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life (Year)	5 years
Improvements [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life (Year)	20 years
Construction in Progress [Member]
Property, plant and equipment, at cost	$ 56,116	$ 65,753