CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS - Schedule of Performance Bonds and Guarantee Funds (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Deposit Assets [Line Items]
Margin deposits	$ 337,916	$ 248,757
Security deposits	55,922	56,989
Total performance bonds and guarantee funds	393,838	305,746
Cash
Deposit Assets [Line Items]
Margin deposits	55,834	22,073
Security deposits	47,445	48,005
Total performance bonds and guarantee funds	103,279	70,078
US Treasury Bills
Deposit Assets [Line Items]
Margin deposits	282,082	226,684
Security deposits	8,477	8,984
Total performance bonds and guarantee funds	$ 290,559	$ 235,668

Deposit Assets [Line Items]

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- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

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- Definition

The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-7

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

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