Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 243,751	$ 224,382
Accumulated depreciation and amortization	(141,313)	(131,413)
Operating lease, right-of-use assets	6,103	4,353
Property, plant and equipment, net	108,541	97,322
Depreciation	13,400	12,200	$ 13,300
Capitalized interest expense related to construction of plant manufacturing assets	500
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,527	2,504
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	66,726	65,237
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	130,481	121,048
Office furniture, equipment and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,966	2,467
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	22,065	20,718
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 13,986	$ 12,408