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Risk Management and Derivatives: (Tables) | 9 Months Ended
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Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Contract or notional amounts and terms of marketing activities and derivative commodity instruments | We had the following net long positions as of:
| September 30, 2022 |  | December 31, 2021 |  |
| Notional Amounts (MMBtus) |  | Maximum Term (months) (a) |  | Notional Amounts (MMBtus) |  | Maximum Term (months) (a) |  |  |  |
Natural gas futures purchased | 1,780,000 |  |  | 6 |  | 590,000 |  |  | 3 |  |  |  |
Natural gas options purchased, net | 5,500,000 |  |  | 6 |  | 3,100,000 |  |  | 3 |  |  |  |
Natural gas basis swaps purchased | 1,530,000 |  |  | 6 |  | 870,000 |  |  | 3 |  |  |  |
Natural gas over-the-counter swaps, net (b) | 6,050,000 |  |  | 27 |  | 4,570,000 |  |  | 34 |  |  |  |
Natural gas physical contracts, net (c) | 29,017,775 |  |  | 15 |  | 16,416,677 |  |  | 24 |  |  |  |
__________ (a) Term reflects the maximum forward period hedged. (b) As of September 30, 2022, 2,292,300 MMBtus of natural gas over-the-counter swaps purchases were designated as cash flow hedges. (c) Volumes exclude derivative contracts that qualify for the normal purchases and normal sales exception permitted by GAAP.
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table presents the fair value and balance sheet classification of our derivative instruments (in thousands) as of:
| Balance Sheet Location | September 30, 2022 | December 31, 2021
Derivatives designated as hedges: |  |  |
Asset derivative instruments: |  |  |
Current commodity derivatives | Derivative assets, current | $ | 21 |  | $ | 2,017 |
Noncurrent commodity derivatives | Other assets, non-current | 383 |  | 18 |
Liability derivative instruments: |  |  |
Current commodity derivatives | Derivative liabilities, current | (1,211) |  | — |
Total derivatives designated as hedges |  | $ | (807) |  | $ | 2,035 |
Derivatives not designated as hedges: |  |  |
Asset derivative instruments: |  |  |
Current commodity derivatives | Derivative assets, current | $ | 3,847 |  | $ | 2,356 |
Noncurrent commodity derivatives | Other assets, non-current | 986 |  | 804 |
Liability derivative instruments: |  |  |
Current commodity derivatives | Derivative liabilities, current | (4,358) |  | (1,439) |
Noncurrent commodity derivatives | Other deferred credits and other liabilities | (23) |  | (20) |
Total derivatives not designated as hedges |  | $ | 452 |  | $ | 1,701 |
Derivative Instruments, Gain (Loss) | The impacts of cash flow hedges on our Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Statements of Income are presented below for the three and nine months ended September 30, 2022 and 2021. Note that this presentation does not reflect the gains or losses arising from the underlying physical transactions; therefore, it is not indicative of the economic profit or loss we realized when the underlying physical and financial transactions were settled.
| Three Months Ended September 30, |  | Three Months Ended September 30,
| 2022 | 2021 |  | 2022 | 2021
Derivatives in Cash Flow Hedging Relationships | Amount of Gain/(Loss) Recognized in OCI | Income Statement Location | Amount of Gain/(Loss) Reclassified from AOCI into Income
| (in thousands) |  | (in thousands)
Interest rate swaps | $ | 712 |  | $ | 712 |  | Interest expense | $ | (712) |  | $ | (712) |
Commodity derivatives | 2,292 |  | 5,536 |  | Fuel, purchased power and cost of natural gas sold | 43 |  | 331 |
Total | $ | 3,004 |  | $ | 6,248 |  |  | $ | (669) |  | $ | (381) |
| Nine Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 | 2021 |  | 2022 | 2021
Derivatives in Cash Flow Hedging Relationships | Amount of Gain/(Loss) Recognized in OCI | Income Statement Location | Amount of Gain/(Loss) Reclassified from AOCI into Income
| (in thousands) |  | (in thousands)
Interest rate swaps | $ | 2,138 |  | $ | 2,138 |  | Interest expense | $ | (2,138) |  | $ | (2,138) |
Commodity derivatives | (2,946) |  | 6,896 |  | Fuel, purchased power and cost of natural gas sold | 3,620 |  | 356 |
Total | $ | (808) |  | $ | 9,034 |  |  | $ | 1,482 |  | $ | (1,782) |
The following table summarizes the impacts of derivative instruments not designated as hedge instruments on our Condensed Consolidated Statements of Income for the three and nine months ended September 30, 2022 and 2021. Note that this presentation does not reflect the expected gains or losses arising from the underlying physical transactions; therefore, it is not indicative of the economic profit or loss we realized when the underlying physical and financial transactions were settled.
|  | Three Months Ended September 30,
|  | 2022 | 2021
Derivatives Not Designated as Hedging Instruments | Location of Gain/(Loss) on Derivatives Recognized in Income | Amount of Gain/(Loss) on Derivatives Recognized in Income
|  | (in thousands)
Commodity derivatives - Electric | Fuel, purchased power and cost of natural gas sold | $ | — |  | $ | 2,494 |
Commodity derivatives - Natural Gas | Fuel, purchased power and cost of natural gas sold | 1,617 |  | 4,004 |
|  | $ | 1,617 |  | $ | 6,498 |
|  | Nine Months Ended September 30,
|  | 2022 | 2021
Derivatives Not Designated as Hedging Instruments | Income Statement Location | Amount of Gain/(Loss) on Derivatives Recognized in Income
|  | (in thousands)
Commodity derivatives - Electric | Fuel, purchased power and cost of natural gas sold | $ | — |  | $ | (2,628) |
Commodity derivatives - Natural Gas | Fuel, purchased power and cost of natural gas sold | 2,779 |  | 6,186 |
|  | $ | 2,779 |  | $ | 3,558 |

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