Equity Method Investment, Number Of Investees

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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- Definition

Fair value portion of investments accounted under the equity method.

+ References

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- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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SECURITIES AND OTHER INVESTMENTS OWNED AND SECURITIES SOLD NOT YET PURCHASED - Additional information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($) company	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) company	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) company
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Equity securities, FV-NI, unrealized gain (loss)	$ (100,337)	$ 25,942	$ (8,708)	$ 13,454
Other Equity Investments
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Equity method investments, fair value	$ 19,672		$ 19,672		$ 19,835
Number of private companies \| company	5		5		5
B&W
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Rate of equity interests	18.00%		18.00%		25.00%
Equity method investments, fair value	$ 160,288		$ 160,288		$ 174,011