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Fair Value Measurements (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Fair Value Assets Measured on Recurring Basis [Roll Forward] |  |  |
Beginning balance |  | $ 185,295 | $ 185,350
Total gains (losses) (realized/unrealized), included in earnings |  | 10,890 | (8,525)
Total gains (losses) (realized/unrealized), included in other comprehensive income | [1] | (3) | (18)
Discount accretion |  | 1 | 1
Purchase of private equity securities |  | 5,601 | 5,698
Sales And Repayments Of Private Equity Securities |  | (17,088) | (5,958)
Capitalized interest/dividends |  | 18 | 17
Ending balance |  | 184,714 | 176,565
Total gains (losses) for the annual period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at period end |  | 10,890 | (8,525)
Gains (Losses) included in OCI Attributable to Change in Unrealized Gains (Losses) Relating to Assets Still Held, Total |  | $ (3) | $ (18)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | INVESTMENT SECURITIES GAINS (LOSSES), NET | INVESTMENT SECURITIES GAINS (LOSSES), NET
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] |  | Net unrealized gains (losses) on available for sale debt securities | Net unrealized gains (losses) on available for sale debt securities
State and municipal obligations [Member] |  |  |
Fair Value Assets Measured on Recurring Basis [Roll Forward] |  |  |
Beginning balance |  | $ 952 | $ 964
Total gains (losses) (realized/unrealized), included in earnings |  | 0 | 0
Total gains (losses) (realized/unrealized), included in other comprehensive income | [1] | (3) | (18)
Discount accretion |  | 1 | 1
Purchase of private equity securities |  | 0 | 0
Sales And Repayments Of Private Equity Securities |  | 0 | 0
Capitalized interest/dividends |  | 0 | 0
Ending balance |  | 950 | 947
Total gains (losses) for the annual period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at period end |  | 0 | 0
Gains (Losses) included in OCI Attributable to Change in Unrealized Gains (Losses) Relating to Assets Still Held, Total |  | (3) | (18)
Private Equity Investments [Member] |  |  |
Fair Value Assets Measured on Recurring Basis [Roll Forward] |  |  |
Beginning balance |  | 184,343 | 184,386
Total gains (losses) (realized/unrealized), included in earnings |  | 10,890 | (8,525)
Total gains (losses) (realized/unrealized), included in other comprehensive income | [1] | 0 | 0
Discount accretion |  | 0 | 0
Purchase of private equity securities |  | 5,601 | 5,698
Sales And Repayments Of Private Equity Securities |  | (17,088) | (5,958)
Capitalized interest/dividends |  | 18 | 17
Ending balance |  | 183,764 | 175,618
Total gains (losses) for the annual period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at period end |  | 10,890 | (8,525)
Gains (Losses) included in OCI Attributable to Change in Unrealized Gains (Losses) Relating to Assets Still Held, Total |  | $ 0 | $ 0
[1] | * Included in "net unrealized gains (losses) on available for sale debt securities" in the consolidated statements of comprehensive income.

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