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Note 23 - Supplemental Cash Flow Disclosure (Details Textual) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest Paid, Excluding Capitalized Interest, Operating Activities					$ 3,164	$ 2,723
Income Taxes Paid					41	482
Proceeds from Income Tax Refunds					0	0
Increase (Decrease) in Other Investments						40,388
Increase (Decrease) in Receivables From Brokers, Dealers, and Clearing Agencies						68,066
Increase (Decrease) in Other Assets						63
Increase (Decrease) in Accounts Payable and Other Accrued Liabilities						82,711
Increase (Decrease) in Other Investments, Not Sold						25,806
In-kind Distribution from Equity Method Affiliate [Member]
Increase (Decrease) in Equity Method Affiliates					7,389	362
Increase (Decrease) in Other Investments					7,389	362
Additional Paid-in Capital [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	$ 198	$ 447	$ 30	$ 582	645	612
AOCI Attributable to Parent [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	(4)	(10)	(1)	(12)	(14)	(13)
Noncontrolling Interest [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	$ (194)	$ (437)	$ (29)	$ (570)	$ (631)	$ (599)

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- Definition

The amount of increase (decrease) in accounts payable and other accrued liabilities during the reporting period.

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Amount, before refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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