Retirement Benefit Plans Defined Contribution Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Jan. 02, 2022
Defined Contribution Plan
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent	75.00%
Defined Contribution Plan, Employer Matching Contribution, Percent	4.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 5,947	$ 5,929	$ 4,583