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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Commitments And Contingencies [Line Items] |  |  |  |
Allowance for credit loss | $ 51,082 | $ 45,413 | $ 39,676 | $ 52,420
Unfunded Commitments [Member] | Provision for Credit Losses [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Credit loss (benefit) expense | 531 | (2,300) | $ 1,400 |
Unfunded Commitments [Member] | Other Liabilities [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Allowance for credit loss | $ 3,600 | $ 4,100 |  |

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