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Risk Management and Derivatives (Tables) | 3 Months Ended
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Mar. 31, 2021
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:
|  | March 31, 2021 |  | December 31, 2020 |  |
| Units | Notional Amounts |  | Maximum Term (months) (a) |  | Notional Amounts |  | Maximum Term (months) (a) |  |  |  |
Natural gas futures purchased | MMBtus | — |  |  | 0 |  | 620,000 |  |  | 3 |  |  |  |
Natural gas options purchased, net | MMBtus | — |  |  | 0 |  | 3,160,000 |  |  | 3 |  |  |  |
Natural gas basis swaps purchased | MMBtus | — |  |  | 0 |  | 900,000 |  |  | 3 |  |  |  |
Natural gas over-the-counter swaps, net (b) | MMBtus | 3,590,000 |  |  | 29 |  | 3,850,000 |  |  | 17 |  |  |  |
Natural gas physical contracts, net (c) | MMBtus | 3,107,817 |  |  | 12 |  | 17,513,061 |  |  | 22 |  |  |  |
Electric wholesale contracts (c) | MWh | 183,025 |  |  | 9 |  | 219,000 |  |  | 12 |  |  |  |
__________ (a) Term reflects the maximum forward period hedged. (b) As of March 31, 2021, 442,900 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 |  | March 31, 2021 | December 31, 2020
Derivatives designated as hedges: |  |  |  |
Asset derivative instruments: |  |  |  |
Current commodity derivatives | Derivative assets, current |  | $ | 285 |  | $ | 181 |
Noncurrent commodity derivatives | Other assets, non-current |  | 4 |  | 43 |
Liability derivative instruments: |  |  |  |
Current commodity derivatives | Derivative liabilities, current |  | — |  | (108) |
Noncurrent commodity derivatives | Other deferred credits and other liabilities |  | — |  | — |
Total derivatives designated as hedges |  |  | $ | 289 |  | $ | 116 |
Derivatives not designated as hedges: |  |  |  |
Asset derivative instruments: |  |  |  |
Current commodity derivatives | Derivative assets, current |  | $ | 1,632 |  | $ | 1,667 |
Noncurrent commodity derivatives | Other assets, non-current |  | 32 |  | 151 |
Liability derivative instruments: |  |  |  |
Current commodity derivatives | Derivative liabilities, current |  | (2,526) |  | (1,936) |
Noncurrent commodity derivatives | Other deferred credits and other liabilities |  | (43) |  | — |
Total derivatives not designated as hedges |  |  | $ | (905) |  | $ | (118) |
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 months ended March 31, 2021 and 2020. Note that this presentation does not reflect 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 March 31, |  | Three Months Ended March 31,
| 2021 | 2020 |  | 2021 | 2020
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 | $ | 713 |  | $ | 713 |  | Interest expense | $ | (713) |  | $ | (713) |
Commodity derivatives | 173 |  | 257 |  | Fuel, purchased power and cost of natural gas sold | (31) |  | (486) |
Total | $ | 886 |  | $ | 970 |  |  | $ | (744) |  | $ | (1,199) |
The following table summarizes the impacts of derivative instruments not designated as hedge instruments on our Condensed Consolidated Statements of Income for the three months ended March 31, 2021 and 2020. Note that this presentation does not reflect 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 March 31,
|  | 2021 | 2020
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 | $ | (1,524) |  | $ | 1,362 |
Commodity derivatives - Natural Gas | Fuel, purchased power and cost of natural gas sold | 366 |  | 766 |
|  | $ | (1,158) |  | $ | 2,128 |

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