Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2026	Jun. 28, 2025	Jun. 30, 2026	Jun. 28, 2025
Income Tax Disclosure [Abstract]
Income tax provision	$ (728)	$ 0	$ (1,438)	$ 0
Effective tax rate	(2.91%)	0.00%	(2.90%)	0.00%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details