Defined Benefit Plans - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Retirement Benefits [Abstract]
Service cost	$ 2,153	$ 1,955	$ 2,262
Interest cost	857	1,308	1,230
Expected return on plan assets	(682)	(817)	(787)
Recognized net actuarial (gain) loss	(690)	470	240
Foreign exchange impacts	66	(79)	(56)
Settlement gain	0	0	(1,236)
Net periodic pension cost	$ 1,704	$ 2,837	$ 1,653