Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 131,242	$ 125,511
Accumulated depreciation	(93,509)	(90,004)
Property and equipment, net	37,733	35,507
Depreciation expense related to property and equipment	12,300	13,000	$ 17,300
Equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	94,780	90,942
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 36,462	$ 34,569