Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
SALES AND OPERATING REVENUES:
Other revenues	$ 10,074	$ 5,184
Total sales and operating revenues	469,466	404,159
EXPENSES:
Fuel	63,854	49,343
Other operating and maintenance costs	129,246	118,364
Cost of purchased power	20,892	10,888
Utilities	16,801	15,914
Labor	110,678	116,164
Depreciation, depletion and amortization	41,222	65,626
Asset retirement obligations accretion	1,764	1,628
Exploration costs	216	260
General and administrative	26,226	26,527
Gain on disposal or abandonment of assets, net	(2,489)	(50)
Asset impairment	0	215,136
Settlement of litigation		2,750
Total operating expenses	408,410	622,550
INCOME FROM OPERATIONS	61,056	(218,391)
Interest income	602	235
Interest expense	(16,896)	(13,850)
Loss on extinguishment of debt	(608)	(2,790)
Equity method investment (loss)	(450)	(746)
NET INCOME (LOSS) BEFORE INCOME TAXES	43,704	(235,542)
INCOME TAX EXPENSE (BENEFIT):
Current		(169)
Deferred	1,833	(9,235)
Total income tax expense (benefit)	1,833	(9,404)
NET INCOME (LOSS)	$ 41,871	$ (226,138)
NET INCOME (LOSS) PER SHARE:
Basic (in dollar per share)	$ 0.98	$ (5.72)
Diluted (in dollar per share)	$ 0.96	$ (5.72)
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	42,932	39,504
Diluted (in shares)	43,432	39,504
Interest Expense:
Interest on bank debt	$ 5,806	$ 9,286
Other interest	9,097	2,817
Amortization of debt issuance costs	1,993	1,747
Total interest expense	16,896	13,850
Electric sales
SALES AND OPERATING REVENUES:
Revenues	310,737	261,527
EXPENSES:
NET INCOME (LOSS) BEFORE INCOME TAXES	43,704
Coal sales
SALES AND OPERATING REVENUES:
Revenues	$ 148,655	$ 137,448