Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total Revenue from Contracts with Customers	$ 536,154	$ 330,760
Loss on Commodity Derivatives, net	(188,154)	0
Miscellaneous Other Income	4,348	3,189
Gain on Sale of Assets	6,181	8,202
Total Revenue and Other Income	358,529	342,151
Costs and Expenses:
Operating and Other Costs	218,535	185,110
Depreciation, Depletion and Amortization	55,954	59,897
Freight Expense	38,389	27,013
Selling, General and Administrative Costs	37,149	23,964
Loss (Gain) on Debt Extinguishment	2,122	(683)
Interest Expense, net	14,352	15,261
Total Costs and Expenses	366,501	310,562
(Loss) Earnings Before Income Tax	(7,972)	31,589
Income Tax (Benefit) Expense	(3,522)	5,185
Net (Loss) Income	$ (4,450)	$ 26,404
(Loss) Earnings per Share:
Total Basic (Loss) Earnings per Share (in dollars per share)	$ (0.13)	$ 0.77
Total Dilutive (Loss) Earnings per Share (in dollars per share)	$ (0.13)	$ 0.75
Coal Revenue [Member]
Total Revenue from Contracts with Customers	$ 476,368	$ 285,535
Terminal Revenue [Member]
Total Revenue from Contracts with Customers	21,397	18,212
Freight Revenue [Member]
Total Revenue from Contracts with Customers	$ 38,389	$ 27,013