LEASES - Lease Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024
Lease, Lease Expenses [Abstract]
Operating lease expense - occupancy expense	$ 12,720	$ 13,893
Occupancy lease expense - general and administrative expenses	937	485
Variable lease expense	3,465	4,539
Total lease expense	17,122	18,917
Lease, Supplemental Cash Flow [Abstract]
Operating cash flows related to operating leases	17,475	18,318
ROU assets obtained in exchange for new operating lease liabilities	$ 0	$ 0
Lease, Weighted Average Remaining Lease Term And Discount Rate [Abstract]
Weighted average remaining lease term	10 years 10 months 24 days	11 years 6 months
Weighted average discount rate	6.20%	6.30%