Employee Benefit Plans - Pre-tax change in the benefit obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Net actuarial (gain) loss	$ (2,630)	$ 3,806
Amortization of the net actuarial loss	(1,375)	(1,055)
Amortization of the prior year service credit	64	64
Total	$ (3,941)	$ 2,815