Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Revenues	$ 1,084,278	$ 1,017,406
Costs and Expenses:
Cost of Sales (exclusive of items shown separately below)	879,185	870,296
Depreciation, Depletion and Amortization	146,295	121,556
General and Administrative Costs	36,079	89,323
Other Operating Income and Expense, net	(9,995)	(9,859)
Costs and Expenses	1,051,564	1,071,316
Income (Loss) from Operations	32,714	(53,910)
Interest Expense	(11,192)	(8,019)
Interest Income	4,748	6,318
Loss on Debt Extinguishment	0	(11,680)
Non-Service Related Pension and Postretirement Benefit Costs	(5,653)	(6,202)
Earnings (Loss) Before Income Tax	20,617	(73,493)
Income Tax Benefit	(427)	(4,216)
Net Income (Loss)	$ 21,044	$ (69,277)
Earnings (Loss) per Share:
Total Basic Earnings (Loss) per Share (in dollars per share)	$ 0.41	$ (1.38)
Total Diluted Earnings (Loss) per Share (in dollars per share)	0.41	(1.38)
Dividends Declared per Common Share (in dollars per share)	$ 0.10	$ 0.10