Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Oct. 01, 2019	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 698,173		$ 593,688
Less: accumulated depreciation	(333,712)		(260,104)
Property, plant and equipment, net	364,461	$ 336,396	333,584
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	357,650		316,390
Equipment Leased to Other Party [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	221,953		172,534
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	70,245		64,165
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 48,325		$ 40,599