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Investments (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |
Number of investments in a single issuer exceeds 10% of shareholders' equity | item | 0 |
Percent of shareholders equity benchmark for investments in a single issuer | 10.00% |
Number of equity investments | item | 1 |
Equity securities | $ 411 | $ 481
Debt securities available for sale, at fair value | 486,836 | 529,811
Corporate [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Debt securities available for sale, at fair value | 24,239 | 24,939
Public Funds And Trust Deposits [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Debt securities available for sale, at fair value | $ 208,900 | $ 160,300

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