Debt - Long-Term Debt and the Current Period Interest Rates (Details) - Line of credit - USD ($) $ in Millions	Dec. 31, 2023	Dec. 25, 2022
Line of Credit Facility [Line Items]
Total debt	$ 227.5	$ 257.5
Less current portion	7.5	6.3
Total long-term debt, less current portion	$ 220.0	$ 251.2
Current period interest rate	7.70%	6.40%
Secured debt
Line of Credit Facility [Line Items]
Total debt	$ 192.5	$ 197.5
Unamortized debt issuance costs	0.7	1.0
Total long-term debt, net of unamortized debt issuance costs - term loans	219.3	250.2
Revolving credit facility
Line of Credit Facility [Line Items]
Total debt	35.0	60.0
Unamortized debt issuance costs	$ 0.7	$ 1.0