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Fair Value Measurements - Classes of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial Assets |  |
Cash and Cash Equivalents | $ 383,180 | $ 336,782
Investments—Consolidated Investment Companies | 70,543 | 108,448
Investments—Affiliates and Other | 106,952 | 76,524
Other | 7,469 | 7,007
Total Financial Assets | 568,144 | 528,761
Financial Liabilities |  |
Total Financial Liabilities | 7,626 | 8,470
Level 1 |  |
Financial Assets |  |
Cash and Cash Equivalents | 383,180 | 336,782
Investments—Consolidated Investment Companies | 11,402 | 49,119
Investments—Affiliates and Other | 104,341 | 71,369
Other | 6,160 | 6,538
Total Financial Assets | 505,083 | 463,808
Financial Liabilities |  |
Total Financial Liabilities | 0 | 27
Level 2 |  |
Financial Assets |  |
Cash and Cash Equivalents | 0 | 0
Investments—Consolidated Investment Companies | 59,141 | 59,329
Investments—Affiliates and Other | 2,588 | 5,130
Other | 1,309 | 469
Total Financial Assets | 63,038 | 64,928
Financial Liabilities |  |
Total Financial Liabilities | 0 | 4
Level 3 |  |
Financial Assets |  |
Cash and Cash Equivalents | 0 | 0
Investments—Consolidated Investment Companies | 0 | 0
Investments—Affiliates and Other | 23 | 25
Other | 0 | 0
Total Financial Assets | 23 | 25
Financial Liabilities |  |
Total Financial Liabilities | $ 7,626 | $ 8,439

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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