Leases (Schedule of balance sheet classification) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022
Operating leases
Operating lease right-of-use assets	$ 82,564	$ 47,245
Current portion of operating lease liabilities	13,074	12,203
Operating lease liabilities	77,557	39,028
Total operating lease liabilities	90,631	51,231
Finance leases
Property, plant and equipment, gross	460,192	365,451
Accumulated depreciation	(137,801)	(145,914)
Property, plant and equipment, net	322,391	219,537
Current portion of long-term debt	33,283	9,760
Long-term debt	90,796	43,034
Finance lease liabilities	124,079	52,794
Finance Leases [Member]
Finance leases
Property, plant and equipment, gross	157,801	66,060
Accumulated depreciation	(20,494)	(10,348)
Property, plant and equipment, net	$ 137,307	$ 55,712