SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recently Adopted Accounting Standards (Details) - USD ($) $ in Millions	Sep. 27, 2024	Sep. 29, 2023	Oct. 01, 2022	Jun. 09, 2020
Debt Instrument
Additional paid-in capital	$ (467.2)	$ (450.4)
Long-term debt, net	397.1	441.1
Deferred tax assets	4.7	41.3
Retained earnings	$ 70.4	$ 118.1
Accounting Standards Update 2020-06
Debt Instrument
Additional paid-in capital			$ 34.6
Long-term debt, net			28.0
Deferred tax assets			0.5
Retained earnings			$ 6.1
Convertible Notes | Convertible Debt
Debt Instrument
Contractual interest rate (as a percent)			4.00%	4.00%