CONTRACT ASSETS AND CONTRACT LIABILITIES (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Contract liabilities recognized | $ 100 | |
| Accounts receivable | ||
| Accounts receivable—Utility Members | 86,635 | $ 83,743 |
| Other accounts receivable - trade: | 54,911 | 32,892 |
| Contract liabilities | ||
| Contract liabilities (unearned revenue) | 3,051 | 3,182 |
| Other accounts receivable - trade | ||
| Accounts receivable | ||
| Other accounts receivable - trade: | 33,540 | 24,728 |
| Other accounts receivable - trade | Non-member electric sales | ||
| Accounts receivable | ||
| Other accounts receivable - trade: | 17,262 | 20,921 |
| Other accounts receivable - trade | Other | ||
| Accounts receivable | ||
| Other accounts receivable - trade: | 16,278 | 3,807 |
| Other accounts receivable - nontrade | ||
| Accounts receivable | ||
| Other accounts receivable - trade: | $ 21,371 | $ 8,164 |