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Derivative and Hedging Instruments (Details-5) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Counterparties in net liability position or default [Abstract] |  |
Derivative, net liability position of counterparties | $ 0 | $ 0
Number of counterparties in default | 0 |
Commodity Contract [Member] | Fuel For Electric Generation Purchased Power [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Realized losses (gains) on income statement | $ 823 | 7,052
Commodity Contract [Member] | Cost Of Gas Sold Expense [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Realized losses (gains) on income statement | (58) | 3,726
Financial Transmission Rights [Member] | Fuel For Electric Generation Purchased Power [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Realized losses (gains) on income statement | 730 | 730
Financial Transmission Rights [Member] | Cost Of Gas Sold Expense [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Realized losses (gains) on income statement | $ 0 | $ 0

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