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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Net operating loss | $ 32,725 | $ 20,029
Power contracts | 10,828 | 23,302
Compensation | 1,955 | 2,287
Accrued liabilities | 423 | 570
ARO liabilities | 2,293 | 2,798
Lease liabilities | 3,938 | 3,044
Coal properties | 26,191 |
Other | 5,215 | 2,016
Total deferred tax assets | 83,568 | 54,046
Valuation allowance | (49,695) |
Deferred tax assets, net of valuation allowance | 33,873 | 54,046
Deferred tax liabilities: |  |
Coal properties |  | (28,535)
Power properties | (27,960) | (31,126)
Investment partnerships | (531) | (549)
ROU assets | (5,382) | (3,071)
Total deferred tax liabilities | $ (33,873) | (63,281)
Net deferred tax liability |  | $ 9,235

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