Benefit Plans - Net Funded Status (Details) - Pension Plan - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	$ 169,741	$ 163,572	$ 144,484
Fair value of plan assets	122,482	118,048	$ 123,471
Funded status	(47,259)	(45,524)
Net pension liability recognized	$ (47,259)	$ (45,524)

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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