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Fair Value Of Financial Instruments (Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair value of investments | $ 32,127 | $ 32,967
Unfunded commitments | 19,509 | 15,635
Partnership Interests [Member] |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair value of investments | 29,277 | 24,261
Unfunded commitments | 19,509 | 14,454
Money Market Funds [Member] |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair value of investments | 1,932 | 4,706
Mutual Funds [Member] |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair value of investments | 574 | 3,632
Private Equity Funds [Member] |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair value of investments | $ 344 | 368
Unfunded commitments |  | $ 1,181

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