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v3.22.2.2

Regulatory Matters (Tables) | 9 Months Ended
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Sep. 30, 2022
Regulatory Assets and Liabilities Disclosure [Abstract] |
Schedule of Regulatory Assets and Liabilities | The following presents our current and long-term regulatory assets and liabilities as of September 30, 2022 and December 31, 2021 and the period we expect to recover or refund such amounts:
| Period of |  | September 30, 2022 |  | December 31, 2021
(in thousands) | Recovery/Refund |  | Current |  | Long-Term |  | Current |  | Long Term
Regulatory Assets |  |  |  |  |  |  |  |  |
Pension and Other Postretirement Benefit Plans 1 | Various |  | $ | 7,791 |  |  | $ | 110,183 |  |  | $ | 7,791 |  |  | $ | 114,961 |
Alternative Revenue Program Riders 2 | Up to 2 years |  | 7,528 |  |  | 1,988 |  |  | 11,889 |  |  | 5,564 |
Asset Retirement Obligations 1 | Asset lives |  | — |  |  | 1,323 |  |  | — |  |  | 742 |
ISO Cost Recovery Trackers 1 | Up to 2 years |  | 660 |  |  | 740 |  |  | — |  |  | 1,342 |
Unrecovered Project Costs 1 | Up to 5 years |  | 320 |  |  | 1,063 |  |  | 2,136 |  |  | 1,455 |
Deferred Rate Case Expenses 1 | Various |  | 412 |  |  | 848 |  |  | 607 |  |  | 1,131 |
Debt Reacquisition Premiums 1 | 10 years |  | 25 |  |  | 222 |  |  | 100 |  |  | 240 |
Fuel Clause Adjustments 1 | Up to 1 year |  | 13,185 |  |  | — |  |  | 4,819 |  |  | — |
Other 1 | Various |  | — |  |  | 226 |  |  | — |  |  | 73 |
Total Regulatory Assets |  |  | $ | 29,921 |  |  | $ | 116,593 |  |  | $ | 27,342 |  |  | $ | 125,508 |
Regulatory Liabilities |  |  |  |  |  |  |  |  |
Deferred Income Taxes | Asset lives |  | $ | — |  |  | $ | 128,397 |  |  | $ | — |  |  | $ | 129,437 |
Plant Removal Obligations | Asset lives |  | 8,526 |  |  | 106,008 |  |  | 8,306 |  |  | 101,595 |
Fuel Clause Adjustments | Up to 1 year |  | — |  |  | — |  |  | 1,554 |  |  | — |
Alternative Revenue Program Riders | Various |  | 4,178 |  |  | 6,048 |  |  | 5,772 |  |  | 3,336 |
Pension and Other Postretirement Benefit Plans | Up to 1 year |  | 2,603 |  |  | — |  |  | 2,603 |  |  | — |
Derivative Instruments | Various |  | 5,532 |  |  | — |  |  | 6,214 |  |  | — |
Other | Various |  | 275 |  |  | 92 |  |  | 395 |  |  | 62 |
Total Regulatory Liabilities |  |  | $ | 21,114 |  |  | $ | 240,545 |  |  | $ | 24,844 |  |  | $ | 234,430 |
1 Costs subject to recovery without a rate of return. |  |  |  |  |  |  |  |  |
2 Amount eligible for recovery includes an incentive or rate of return. |  |  |  |  |  |  |  |  |

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