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SEGMENTS OF BUSINESS - Schedule of EBITDA Margin to Income (loss) before Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
SEGMENTS OF BUSINESS |  |  |  |
Other Operating Revenue | $ 4,766 | $ 1,045 | $ 6,425 | $ 2,308
Depreciation, Depletion and Amortization | (5,542) | (13,649) | (20,519) | (29,092)
Asset Retirement Obligations Accretion | (437) | (399) | (864) | (798)
Exploration Costs | (98) | (47) | (119) | (117)
Gain (loss) on disposal or abandonment of assets, net | 55 | 222 | 76 | 246
Interest Expense | (3,819) | (3,735) | (7,542) | (7,672)
Loss on Extinguishment of Debt |  | (1,937) |  | (2,790)
Equity Method Investment (Loss) | 197 | (257) | (39) | (506)
Corporate - General and Administrative | (4,457) | (2,862) | (7,434) | (5,310)
Corporate - Other Operating and Maintenance Costs |  | (131) |  | (223)
NET INCOME (LOSS) BEFORE INCOME TAXES | 8,248 | (13,215) | 18,227 | (15,521)
Electric sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 22,316 | 24,221 | 71,876 | 61,730
Coal sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | (4,733) | (15,686) | (23,633) | (33,297)
Scenario, Adjustment | Coal Operations |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
Depreciation, Depletion and Amortization | 4,800 |  |  |
Operating Segment | Electric Operations |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 15,617 | 11,425 | 41,760 | 31,323
Other Operating Revenue | 3,134 | 174 | 3,221 | 331
Depreciation, Depletion and Amortization | (5,164) | (4,698) | (10,325) | (9,395)
Asset Retirement Obligations Accretion | (123) | (113) | (243) | (224)
Interest Expense | (1,891) | (186) | (3,623) | (334)
NET INCOME (LOSS) BEFORE INCOME TAXES | 11,573 | 6,602 | 30,790 | 21,701
Operating Segment | Electric Operations | Electric sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 15,617 | 11,425 | 41,760 | 31,323
Operating Segment | Coal Operations |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 2,649 | (2,777) | 8,338 | (3,982)
Other Operating Revenue | 1,399 | 497 | 2,723 | 1,307
Depreciation, Depletion and Amortization | (359) | (8,930) | (10,156) | (19,658)
Asset Retirement Obligations Accretion | (314) | (286) | (621) | (574)
Exploration Costs | (98) | (47) | (119) | (117)
Gain (loss) on disposal or abandonment of assets, net | 55 | 222 | 76 | 246
Interest Expense | (1,928) | (3,188) | (3,919) | (6,397)
NET INCOME (LOSS) BEFORE INCOME TAXES | 1,404 | (14,509) | (3,678) | (29,175)
Operating Segment | Coal Operations | Coal sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 2,649 | (2,777) | 8,338 | (3,982)
Corporate and Other and Eliminations |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
Other Operating Revenue | 233 | 374 | 481 | 670
Depreciation, Depletion and Amortization | (19) | (21) | (38) | (39)
Interest Expense |  | (361) |  | (941)
Loss on Extinguishment of Debt |  | (1,937) |  | (2,790)
Equity Method Investment (Loss) | 197 | (257) | (39) | (506)
Corporate - General and Administrative | (4,457) | (2,862) | (7,434) | (5,310)
Corporate - Other Operating and Maintenance Costs |  | (131) |  | (223)
NET INCOME (LOSS) BEFORE INCOME TAXES | (4,729) | (5,308) | (8,885) | (8,047)
Corporate and Other and Eliminations | Electric sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | 6,699 | 12,796 | 30,116 | 30,407
Corporate and Other and Eliminations | Coal sales |  |  |  |
SEGMENTS OF BUSINESS |  |  |  |
EBITDA Margin | $ (7,382) | $ (12,909) | $ (31,971) | $ (29,315)

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