Leases (Disclosure of balance sheet classification) (Details) - USD ($) $ in Thousands	Apr. 01, 2023	Dec. 31, 2022
Operating leases:
Operating lease right-of-use assets	$ 81,097	$ 82,564
Current portion of operating lease liabilities	13,199	13,074
Operating lease liabilities	76,670	77,557
Total operating lease liabilities	89,869	90,631
Finance leases:
Property, plant and equipment, net	339,529	322,391
Current portion of long-term debt	35,756	33,283
Long-term debt	84,361	90,796
Total finance lease liabilities	120,117	124,079
Finance Leases [Member]
Finance leases:
Property, plant and equipment, gross	168,663	157,801
Accumulated depreciation	(24,254)	(20,494)
Property, plant and equipment, net	$ 144,409	$ 137,307