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DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions		12 Months Ended
	Oct. 01, 2025 USD ($)	Dec. 31, 2025 USD ($) segment store	Dec. 31, 2024 USD ($) segment	Jan. 01, 2024 USD ($)	Sep. 30, 2023 property
Product Information [Line Items]
Number of operating segments \| segment		2	2
Number of stores \| store		48
Impairment of franchise rights	$ 0.8	$ 34.0
Long-term debt, net of current maturities		207.2	$ 212.0
Additional paid in capital		$ (704.1)	(700.9)
Employer matching contribution, percent of employees' pay		75.00%
Defined contribution plan, cost		$ 0.0	0.0
Impairment of intangible assets		34.8	39.3
Unallocated, Eliminations and Adjustments
Product Information [Line Items]
Impairment of intangible assets		$ 34.8	$ 39.3
Cumulative Effect, Period of Adoption, Adjustment
Product Information [Line Items]
Long-term debt, net of current maturities				$ 3.7
Additional paid in capital				$ 3.7
Discontinued Operations, Disposed of by Sale
Product Information [Line Items]
Number of owned properties \| property					8