Benefit Plans - Benefit Plan Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Dec. 26, 2020	Dec. 28, 2019
Components of net periodic benefit cost:
Service cost	$ 2,785	$ 2,462	$ 2,040
Interest cost	1,761	2,173	3,169
Expected return on plan assets	(1,458)	(1,972)	(3,187)
Amortization of prior service and net actuarial loss	1,315	963	243
Net periodic benefit cost	4,403	3,626	2,265
Net settlement loss	19,855	236	260
Total expense for the year	$ 24,258	$ 3,862	$ 2,525