Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 27, 2020
Leases [Abstract]
Operating cash outflow from operating leases	$ 14,325	$ 14,789	$ 10,003
Right-of-use assets obtained in exchange for operating lease liabilities	$ 990	$ 932	$ 1,630