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Note 7 - Components of Working Capital Accounts - Components of Working Capital Accounts (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Work-in-progress $ 181,751 $ 177,134
Finished goods 26,350 32,340
Supplies and other 38,091 32,867
Inventory, Net 246,192 242,341
Accrued payroll and benefits 176,921 146,852
Value appreciation plans(1) [1] 4,874 9,403
Customer advances 7,149 6,397
Other 138,792 119,672
Accrued Liabilities, Current $ 327,736 $ 282,324
[1] Non-current portion of value appreciation plans of $62,268 is included in Other Liabilities