Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 25, 2021	Dec. 28, 2019	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020
Current [Abstract]
Federal			$ 10	$ 7	$ 4
State and local			1,057	1,001	346
Total current taxes			1,067	1,008	350
Deferred [Abstract]
Deferred	$ (638)	$ (496)	(638)	102	(496)
Provision for income taxes - current and deferred			$ 429	$ 1,110	$ (146)