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Fair Value of Financial Instruments (Levels) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Investments in securities: |  |  |
Investments in trading securities | $ 25,748 | $ 32,674 |
Total assets measured at fair value | 27,694 | 32,915 |
Asset Acquisition, Consideration Transferred, Contingent Consideration | $ 4,700 | 12,900 |
Unobservable input - growth discount rate - weighted average | 7.25% |  |
Unobservable input - growth discount rate - maximum | 7.50% |  |
Unobservable input - growth discount rate - minimum | 7.00% |  |
Unobservable input - growth volatility - weighted average | 6.90% |  |
Unobservable input - growth volatility - maximum | 11.90% |  |
Unobservable input - growth volatility - minimum | 1.90% |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | $ 4,657 | 10,133 | $ 12,901
Payment for Contingent Consideration Liability, Financing Activities | (10,357) |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings | 4,881 | (2,768) |
Asset Acquisition, Contingent Consideration, Liability | 4,657 | 10,133 |
Private equity |  |  |
Investments in securities: |  |  |
Equity Securities, FV-NI | 1,946 | 241 |
Contingent Consideration Type [Domain] |  |  |
Investments in securities: |  |  |
Asset Acquisition, Consideration Transferred, Contingent Consideration | 4,657 | 10,133 |
Other Liabilities, Fair Value Disclosure | 4,657 | 10,133 |
Level 1 |  |  |
Investments in securities: |  |  |
Investments in trading securities | 25,748 | 32,674 |
Total assets measured at fair value | 25,748 | 32,674 |
Level 1 | Private equity |  |  |
Investments in securities: |  |  |
Equity Securities, FV-NI | 0 | 0 |
Level 2 |  |  |
Investments in securities: |  |  |
Investments in trading securities | 0 | 0 |
Total assets measured at fair value | 0 | 0 |
Level 2 | Private equity |  |  |
Investments in securities: |  |  |
Equity Securities, FV-NI | 0 | 0 |
Level 3 |  |  |
Investments in securities: |  |  |
Investments in trading securities | 0 | 0 |
Total assets measured at fair value | 0 | 0 |
Level 3 | Private equity |  |  |
Investments in securities: |  |  |
Equity Securities, FV-NI | 0 | 0 |
Level 3 | Contingent Consideration Type [Domain] |  |  |
Investments in securities: |  |  |
Asset Acquisition, Consideration Transferred, Contingent Consideration | 4,657 | 10,133 |
Other Liabilities, Fair Value Disclosure | 4,657 |  |
Fair Value Measured at Net Asset Value Per Share | Private equity |  |  |
Investments in securities: |  |  |
Equity Securities, FV-NI | 1,946 | 241 |
Inputs, Net Asset Value [Member] |  |  |
Investments in securities: |  |  |
Investments in trading securities | 0 | 0 |
Total assets measured at fair value | $ 1,946 | $ 241 |

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