Leases (Schedule of balance sheet classification) (Details) - USD ($) $ in Thousands	Dec. 28, 2024	Dec. 30, 2023
Operating leases
Operating lease right-of-use assets	$ 105,692	$ 104,788
Current portion of operating lease liabilities	17,055	15,808
Operating lease liabilities	99,328	98,696
Total operating lease liabilities	116,383	114,504
Finance leases
Property, plant and equipment, gross	499,392	447,223
Accumulated depreciation	(155,774)	(127,024)
Property, plant and equipment, net	343,618	320,199
Current portion of long-term debt	20,393	15,647
Long-term debt	38,528	37,284
Total finance lease liabilities	58,921	52,931
Finance Leases [Member]
Finance leases
Property, plant and equipment, gross	100,481	81,724
Accumulated depreciation	(23,514)	(18,319)
Property, plant and equipment, net	$ 76,967	$ 63,405