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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Tax Credit Carryforward [Line Items] |  |  |
Federal corporate income tax rate (in percent) | 20.19% | 18.21% | 19.18%
Federal corporate income tax rate (in percent) | 21.00% | 21.00% | 21.00%
Benefit from investment tax credit | $ 25 |  |
Tax benefit to be generated over the life of the project | 321 |  |
Current tax expense (benefit) | 5,981 | $ 4,268 | $ 3,830
Deferred income | 284 | 1,085 | 7
Income tax benefit | (5,697) | $ (3,183) | $ (3,823)
Investment Tax Credit Carryforward |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Current tax expense (benefit) | (4,000) |  |
Deferred income | 289 |  |
Deferred tax liability | 7 |  |
Income tax benefit | 25 |  |
Write-off of Investment |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Current tax expense (benefit) | $ 3,700 |  |

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