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Income Taxes (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 24, 2024 USD ($) jurisdiction	Mar. 26, 2023 USD ($)	Mar. 24, 2024 USD ($) jurisdiction	Mar. 26, 2023 USD ($)
Income Tax Disclosure [Abstract]
Income tax benefit	$ (2,837)	$ (2,071)	$ (2,589)	$ (1,631)
Income before taxes	$ (14,500)	$ (7,400)	$ (13,000)	$ (5,200)
Effective income tax rate	19.60%	27.80%	19.90%	31.50%
Number of state and local jurisdictions | jurisdiction	27		27

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