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Other Retirement Plans - Other Retirement Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 24, 2023
GCIU- Employer Retirement Fund
Multiemployer Plan [Line Items]
Contributions	$ 0	$ 0	$ 0
District No. 9, International Association of Machinists and Aerospace Workers Pension Trust
Multiemployer Plan [Line Items]
Contributions	0	0	0
CWA/ITU negotiated Pension Plan
Multiemployer Plan [Line Items]
Contributions	0	0	0
IAM National Pension Fund
Multiemployer Plan [Line Items]
Contributions	0	0	45
Operating Engineers Central Pension Fund of the International Union of Operating Engineers and Participating Employers
Multiemployer Plan [Line Items]
Contributions	$ 0	$ 0	$ 32

X

- Definition

Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan.

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