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Fair Value Measurements (Details) - Schedule of Assets and Liabilities Measured at Fair Value - USD ($)
$ in Thousands

Mar. 31, 2024

Dec. 31, 2023

Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member]

Recurring fair value measurements:

Cash equivalents

$ 13,795

50,226

Financial instruments owned, at fair value:

Total

72,096

108,948

Fair Value, Recurring [Member] | Level 1 [Member]

Recurring fair value measurements:

Cash equivalents

13,795

50,226

Financial instruments owned, at fair value:

Total

55,962

92,752

Fair Value, Recurring [Member] | Level 2 [Member]

Recurring fair value measurements:

Cash equivalents

Financial instruments owned, at fair value:

Total

16,134

16,196

Fair Value, Recurring [Member] | Level 3 [Member]

Recurring fair value measurements:

Cash equivalents

Financial instruments owned, at fair value:

Total

Fair Value, Recurring [Member] | U.S. treasuries [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

5,261

5,007

Fair Value, Recurring [Member] | U.S. treasuries [Member] | Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | U.S. treasuries [Member] | Level 2 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

5,261

5,007

Fair Value, Recurring [Member] | U.S. treasuries [Member] | Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | Equity Securities [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

7,095

6,337

Fair Value, Recurring [Member] | Equity Securities [Member] | Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

7,095

6,337

Fair Value, Recurring [Member] | Equity Securities [Member] | Level 2 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | Equity Securities [Member] | Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | Fixed Income Investments [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

1,939

1,957

Fair Value, Recurring [Member] | Fixed Income Investments [Member] | Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

1,014

1,008

Fair Value, Recurring [Member] | Fixed Income Investments [Member] | Level 2 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

925

949

Fair Value, Recurring [Member] | Fixed Income Investments [Member] | Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | ETFs [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

34,058

35,181

Fair Value, Recurring [Member] | ETFs [Member] | Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

34,058

35,181

Fair Value, Recurring [Member] | ETFs [Member] | Level 2 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | ETFs [Member] | Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | Pass-through GSEs [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

9,948

10,240

Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 1 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 2 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

9,948

10,240

Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 3 [Member]

Financial instruments owned, at fair value:

Financial instruments owned, at fair value

Fair Value, Nonrecurring [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

9,684

Fair Value, Nonrecurring [Member] | Level 1 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

Fair Value, Nonrecurring [Member] | Level 2 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

Fair Value, Nonrecurring [Member] | Level 3 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

9,684

Fnality International Limited—B-One Preference Shares [Member] | Fair Value, Nonrecurring [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[1]

9,684

Fnality International Limited—B-One Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 1 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[1]

Fnality International Limited—B-One Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 2 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[1]

Fnality International Limited—B-One Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 3 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[1]

9,684

Other Investments [Member] | Fair Value, Nonrecurring [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[2]

Other Investments [Member] | Fair Value, Nonrecurring [Member] | Level 1 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[2]

Other Investments [Member] | Fair Value, Nonrecurring [Member] | Level 2 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[2]

Other Investments [Member] | Fair Value, Nonrecurring [Member] | Level 3 [Member]

Non-recurring fair value measurements:

Non-recurring fair value measurements

^[2]

[1]	Fair value determined on October 31, 2023
[2]	Fair value determined on September 30, 2023

X

- 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
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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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
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-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
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Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 940
-SubTopic 320
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479035/940-320-45-2

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