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Note 24 - Related Party Transactions - Routine Transactions Recognized in the Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Asset management	$ 473	$ 317	$ 974	$ 734
Principal transactions and other income	(455)	353	(214)	848
Income (loss) from equity method affiliates	(5,996)	(511)	23,049	(906)
Income (loss) from equity method affiliates	(5,996)	(511)	23,049	(906)
Operating expense (income)	122	36	254	185
Interest expense (income)	234	196	720	514
CREO JV [Member]
Asset management	187	0	371	0
Principal transactions and other income	(276)	158	(117)	507
SPAC Fund [Member]
Asset management	0	0	0	173
Principal transactions and other income	0	0	0	28
U.S. Insurance JV [Member]
Asset management	286	317	603	561
Principal transactions and other income	(179)	185	(102)	288
Other SPAC Sponsor Entities [Member]
Asset management	0	10	5	25
Income (loss) from equity method affiliates	(5,985)	(580)	23,176	(1,117)
Income (loss) from equity method affiliates	(5,985)	(580)	23,176	(1,117)
Dutch Real Estate Entities [Member]
Income (loss) from equity method affiliates	(11)	69	(127)	211
Income (loss) from equity method affiliates	(11)	69	(127)	211
Equity Method Affiliates [Member]
Income (loss) from equity method affiliates	(5,996)	(511)	23,049	(906)
Income (loss) from equity method affiliates	(5,996)	(511)	23,049	(906)
Duane Morris [Member]
Operating expense (income)	148	61	306	236
Cohen Circle LLC [Member]
Operating expense (income)	(26)	(25)	(52)	(51)
JKD Investor [Member]
Interest expense (income)	$ 234	$ 196	$ 720	$ 514

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+ References

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Principal transactions include all gains, losses, and income (interest and dividend) from securities or loans classified as other investments, at fair value (including gains and losses on derivatives classified as other investments, at fair value) in the consolidated balance sheets. Other income includes foreign currency gains and losses, interest earned on cash and cash equivalents, and other miscellaneous income.

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- Definition

Asset management fees income with related party.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481664/323-10-45-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Name Accounting Standards Codification
-Section 50
-Paragraph 22
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

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