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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Commitments And Contingencies [Line Items] |  |  |  |
Allowance for credit loss | $ 47,528 | $ 45,413 | $ 40,966 | $ 39,676
Unfunded Commitments [Member] | Other Liabilities [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Allowance for credit loss | $ 4,100 | $ 4,100 |  |

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