Investments of Operating Entities And Consolidated Funds - Consolidated Funds - Indirect Concentration of the Underlying Investments Held by Consolidated Funds (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Equity Securities \| Linkem \| ITALY \| Wireless Broadband
Investment Holdings [Line Items]
Percentage of Stockholders' Equity		8.22%
Market Value	$ 83,537	$ 83,537
Preferred Stock \| Polysign \| UNITED STATES \| Technology Sector
Investment Holdings [Line Items]
Percentage of Stockholders' Equity	5.37%
Market Value	$ 57,165

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5D
-Subparagraph (SX 210.12-13D(Column C))
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
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-URI http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

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