Income Taxes - Narrative (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%)
Pre-tax income (loss)	$ (24,983)	$ (38,019)	$ (49,543)	$ (117,520)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

- Definition

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

+ References

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+ Details