INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 29, 2024	Dec. 31, 2023
Deferred Tax Assets:
Net federal and state operating loss carryforwards	$ 4.7	$ 3.4
Tax credits	20.3	0.0
Interest expense carryforward	1.7	0.6
Deferred revenue	0.4	0.0
Reserves and accruals	3.2	0.2
Share-based compensation	0.1	0.0
Operating lease liabilities	42.8	28.6
Fixed assets	0.0	0.6
Other	0.4	0.3
Total deferred tax assets	73.6	33.7
Valuation allowance	(20.6)	(3.6)
Deferred tax assets net of valuation allowance	53.0	30.1
Deferred Tax Liabilities:
Intangibles	(11.2)	(2.2)
Fixed assets	(2.0)	0.0
Operating lease right-of-use assets	(42.5)	(27.9)
Total deferred tax liabilities	(55.7)	(30.1)
Net deferred tax liability	$ (2.7)	$ 0.0