Regulatory Authorities - Additional Information (Details) $ in Thousands	Dec. 31, 2023 USD ($)
LFNY
Regulatory Requirements [Line Items]
Minimum net capital requirement as defined under exchange act	$ 5
Minimum net capital requirement	6,529
U.K. Subsidiaries
Regulatory Requirements [Line Items]
Regulatory capital	220,204
Regulatory capital in excess of minimum requirement	154,383
CFLF
Regulatory Requirements [Line Items]
Regulatory capital	156,703
Regulatory capital in excess of minimum requirement	62,519
Combined European Regulated Group
Regulatory Requirements [Line Items]
Regulatory capital	181,665
Regulatory capital in excess of minimum requirement	78,796
Other U.S. and Non-U.S. Subsidiaries
Regulatory Requirements [Line Items]
Regulatory capital	143,682
Regulatory capital in excess of minimum requirement	$ 120,239

Regulatory requirements.

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- Definition

Minimum amount of net capital required to be maintained by broker-dealer and its subsidiary, calculated under Aggregate Indebtedness Standard.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

+ Details

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- Definition

Amount of total capital as defined by regulatory framework.

+ References

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- Definition

Amount of total risk-based capital exceeding minimum required for capital adequacy as defined by regulatory framework.

+ References

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- Definition

Amount of minimum tangible capital required for capital adequacy as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480696/942-505-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B

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