Leases - Schedule of Quantitative Information on the Partnership's Lease Population (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
Lessee Disclosure [Abstract]
Lease expense	$ 9,838	$ 8,933
Other information:
Cash payments for operating leases	10,074	8,941
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 18,904	$ 12,387
Weighted-average remaining lease term	6 years 1 month 6 days	6 years 4 months 24 days
Weighted-average discount rate	4.90%	5.30%