Leases - Narrative (Details) $ in Thousands		12 Months Ended
	Mar. 16, 2020 USD ($) property	Sep. 24, 2023 USD ($)	Sep. 25, 2022 USD ($)	Sep. 26, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Annual rent		$ 12,688	$ 13,786	$ 14,846
Operating lease right-of-use assets		40,822	$ 47,490
Present value of lease liabilities		44,336
Number of leases terminated during period			14
Impairment loss for right-of-use assets			$ 7,800
Lease Agreement With BH Media
Lessee, Lease, Description [Line Items]
Number of leased properties | property	68
Annual rent	$ 8,000
Percentage of net consideration	8.00%
Monthly rent credits		200
Annual rent		$ 5,200
Operating lease right-of-use assets	$ 56,200
Present value of lease liabilities	$ 56,200
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term (year)		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term (year)		40 years