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Note 7 - Components of Working Capital Accounts - Components of Working Capital Accounts (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Work-in-progress $ 213,752 $ 181,751
Finished goods 20,533 26,350
Supplies and other 45,341 38,091
Inventory, Net 279,626 246,192
Accrued payroll and benefits 192,732 176,921
Value appreciation plans(1) [1] 3,189 4,874
Customer advances 6,747 7,149
Other 164,775 138,792
Accrued Liabilities, Current $ 367,443 $ 327,736
[1] Non-current portion of value appreciation plans of $75,006 is included in Other Liabilities