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Variable Interest Entities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2015
--- | --- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Original benefit of contribution by tax credit investors | $ (4,561) | $ (4,721) |
Liabilities | 4,187,121 | 4,038,330 |
Variable Interest Entity, Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Liabilities | $ 4,600 | $ 4,700 |
Cloverleaf |  |  |
Variable Interest Entity [Line Items] |  |  |
Original benefit of contribution by tax credit investors |  |  | $ 5,600

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