Employee Benefit Plans (Summary of Funded Status of Defined Benefit Retirement Plan) (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019
Retirement Benefits [Abstract]
Funded status, end of year	$ (17,167)	$ (17,437)
Actuarial net loss in AOCI, pre-tax	14,945	16,546
Accrued payroll and related costs	(1,047)	(853)
Defined benefit pension plan obligation	(15,982)	(16,585)
Other long-term liabilities	(137)	0
Deferred income taxes	4,524	5,008
AOCI, net of tax	10,420	11,539
Net amount recognized	$ (2,222)	$ (891)