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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, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets |  |
Cash and Cash Equivalents | $ 504,441 | $ 383,180
Investments—Consolidated Investment Companies | 82,441 | 70,543
Investments—Affiliates and Other | 54,160 | 106,952
Other | 9,570 | 7,804
Total Financial Assets | 650,612 | 568,479
Financial Liabilities |  |
Total Financial Liabilities | 3,172 | 7,961
Level 1 |  |
Financial Assets |  |
Cash and Cash Equivalents | 504,441 | 383,180
Investments—Consolidated Investment Companies | 12,090 | 11,402
Investments—Affiliates and Other | 51,847 | 104,341
Other | 9,570 | 6,160
Total Financial Assets | 577,948 | 505,083
Financial Liabilities |  |
Total Financial Liabilities | 0 | 0
Level 2 |  |
Financial Assets |  |
Cash and Cash Equivalents | 0 | 0
Investments—Consolidated Investment Companies | 70,351 | 59,141
Investments—Affiliates and Other | 2,290 | 2,588
Other | 0 | 1,644
Total Financial Assets | 72,641 | 63,373
Financial Liabilities |  |
Total Financial Liabilities | 2,819 | 335
Level 3 |  |
Financial Assets |  |
Cash and Cash Equivalents | 0 | 0
Investments—Consolidated Investment Companies | 0 | 0
Investments—Affiliates and Other | 23 | 23
Other | 0 | 0
Total Financial Assets | 23 | 23
Financial Liabilities |  |
Total Financial Liabilities | $ 353 | $ 7,626

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- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -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 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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