Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
SALES AND OPERATING REVENUES:
Other revenues		$ 1,340	$ 1,897
Total revenue		188,334	58,907
EXPENSES:
Operating expenses		133,521	54,601
Depreciation, depletion and amortization		17,976	9,531
Asset retirement obligations accretion		451	246
Exploration costs		206	57
General and administrative		6,947	3,149
Total operating expenses		159,101	67,584
INCOME (LOSS) FROM OPERATIONS		29,233	(8,677)
Interest expense (1)	[1]	(3,899)	(1,784)
Equity method investment income		69	150
NET INCOME (LOSS) BEFORE INCOME TAXES		25,403	(10,311)
INCOME TAX EXPENSE (BENEFIT):
Current		432	0
Deferred		2,920	(177)
Total income tax expense (benefit)		3,352	(177)
NET INCOME (LOSS)		$ 22,051	$ (10,134)
NET INCOME (LOSS) PER SHARE:
Basic (in dollars per share)		$ 0.67	$ (0.33)
Diluted (in dollars per share)		$ 0.61	$ (0.33)
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)		32,983	30,785
Diluted (in shares)		36,740	30,785
(1) Interest Expense:
Interest on bank debt		$ 2,255	$ 1,710
Other interest		432
Amortization and swap-related interest:
Payments on interest rate swap, net of changes in value		0	(617)
Amortization of debt issuance costs		1,212	691
Total amortization and swap related interest		1,212	74
Total interest expense	[1]	3,899	1,784
Coal Sales [Member]
SALES AND OPERATING REVENUES:
Revenues		94,602	57,010
Electric Sales [Member]
SALES AND OPERATING REVENUES:
Revenues		$ 92,392	$ 0

[1] Interest Expense: