Debt - Long-Term Debt and the Current Period Interest Rates (Details) - Line of Credit - USD ($) $ in Millions	Oct. 01, 2023	Dec. 25, 2022
Line of Credit Facility [Line Items]
Total debt	$ 243.7	$ 257.5
Less current portion	8.7	6.3
Total long-term debt, less current portion	$ 235.0	$ 251.2
Current period interest rate	7.70%	6.40%
Secured debt
Line of Credit Facility [Line Items]
Total debt	$ 193.7	$ 197.5
Unamortized debt issuance costs	0.8	1.0
Total long-term debt, net of unamortized debt issuance costs - term loans	234.2	250.2
Revolving Credit Facility
Line of Credit Facility [Line Items]
Total debt	50.0	60.0
Unamortized debt issuance costs	$ 0.8	$ 1.0