SEGMENTS OF BUSINESS - Assets And Capital Expenditure (Details) - USD ($) $ in Thousands |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| SEGMENTS OF BUSINESS | |||
| Assets | $ 908,741 | $ 408,053 | |
| Capital Expenditures | 91,080 | $ 44,277 | |
| Cash and cash equivalents | 103,155 | 12,663 | 10,070 |
| Operating Segment | Electric Operations | |||
| SEGMENTS OF BUSINESS | |||
| Assets | 686,825 | 256,529 | |
| Capital Expenditures | 78,644 | 25,369 | |
| Operating Segment | Coal Operations | |||
| SEGMENTS OF BUSINESS | |||
| Assets | 153,856 | 148,957 | |
| Capital Expenditures | 12,436 | 18,908 | |
| Cash and cash equivalents | 9,400 | ||
| Corporate and Other and Eliminations | |||
| SEGMENTS OF BUSINESS | |||
| Assets | 68,060 | $ 2,567 | |
| Capital Expenditures | $ 0 | $ 0 | |
| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|