Other - (Schedule of Operating Revenues) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Accounting Policies [Abstract] | ||||
| Energy revenues Formula rate | $ 120,201 | $ 122,351 | $ 268,485 | $ 266,976 |
| Renewable energy credits Formula rate | 3 | 91 | 309 | 201 |
| Demand revenues Formula rate | 135,676 | 124,297 | 277,139 | 239,991 |
| Total Formula rate revenues | 255,880 | 246,739 | 545,933 | 507,168 |
| Energy revenues Market-based rates | 29,102 | 9,803 | 52,906 | 17,255 |
| Demand revenues Market-based rates | 5,175 | 2,689 | 8,676 | 3,974 |
| Total Market-based rates revenues | 34,277 | 12,492 | 61,582 | 21,229 |
| Total Member distribution cooperatives revenues | 290,157 | 259,231 | 607,515 | 528,397 |
| Energy revenues | 10,136 | 2,861 | 15,302 | 4,207 |
| Renewable energy credits | 632 | 519 | 1,718 | 1,491 |
| Total Non-members revenues | 10,768 | 3,380 | 17,020 | 5,698 |
| Total Operating revenues | $ 300,925 | $ 262,611 | $ 624,535 | $ 534,095 |
| Type Of Revenue Extensible List | us-gaap:ElectricityMember | us-gaap:ElectricityMember | us-gaap:ElectricityMember | us-gaap:ElectricityMember |
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- Definition Demand revenues from sales to member distribution cooperatives formula rate. No definition available.
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- Definition Demand revenues from sales to member distribution cooperatives market-based rates. No definition available.
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- Definition Energy revenues from sales to member distribution cooperatives formula rate. No definition available.
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- Definition Energy revenues from sales to member distribution cooperatives market-based rates. No definition available.
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- Definition Non member energy revenues No definition available.
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- Definition Renewable Energy Credits Revenues from sales to Non-Members No definition available.
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- Definition Renewable energy credits revenues from sales to member distribution cooperatives formula rate. No definition available.
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- Definition Total Revenues from sales to Member Distribution Cooperatives. No definition available.
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- Definition Total revenues from sales to member distribution cooperatives formula rate. No definition available.
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- Definition Total revenues from sales to member distribution cooperatives market-based rates. No definition available.
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- Definition Total Revenues from sales to Non-members. No definition available.
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- References No definition available.
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Indicates type of revenue from product and service. Includes, but is not limited to, revenue from contract with customer and other sources. No definition available.
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