Note 22 - Supplemental Cash Flow Disclosure (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Interest Paid, Excluding Capitalized Interest, Operating Activity	$ 1,417	$ 1,445
Income Taxes Paid	150	28
Proceeds from Income Tax Refunds	0	0
Increase (Decrease) in Financial Instruments Sold, Not yet Purchased	(3,776)	(8,636)
Increase (Decrease) in Other Receivables	(500)	1,411
Liability Incurred for Dividends and Distributions Declared [Member]
Increase (Decrease) in Accounts Payable and Other Accrued Liabilities	1,121	1,419
In-kind Distribution from Equity Method Affiliate [Member]
Increase (Decrease) in Equity Method Affiliates	(113)
Increase (Decrease) in Other Investments	113
Shares Issued to Former SPAC Sponsor Entity [Member]
Increase (Decrease) in Other Investments	(505)
Increase (Decrease) in Financial Instruments Sold, Not yet Purchased	(505)
In-kind Distribution to Non-convertible Controlling Interest [Member]
Increase (Decrease) in Other Investments	(392)
Sale of Equity Interest in Vellar GP [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	(1,691)
Increase (Decrease) in Other Investments	(1,299)
Increase (Decrease) in Financial Instruments Sold, Not yet Purchased	(344)
Increase (Decrease) in Other Receivables	(19)
Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization	(1,120)
Redemption of Llc Units by Employees [Member]
Increase (Decrease) in Due to Related Parties		437
Increase (decrease) in Payroll Withholdings		222
Stockholders' Equity, Period Increase (Decrease)		659
Additional Paid-in Capital [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	502	447
AOCI Attributable to Parent [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	(13)	(10)
Noncontrolling Interest [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	(489)	$ (437)
Noncontrolling Interest [Member] \| Sale of Equity Interest in Vellar GP [Member]
Minority Interest, Increase (Decrease) Related to Units of Consolidated Subsidiary	$ (1,691)

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

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Represents the increase (decrease) in equity method affiliates during the period.

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Represents the amount of increase (decrease) in other investments, at fair value.

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The increase (decrease) in the payroll withholdings.

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Amount of increase (decrease) in noncontrolling interest from acquisition (surrender) of additional unites of consolidated subsidiary.

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

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The increase (decrease) during the reporting period in the total amount due to the entity related to activities and operations with other broker dealers, and clearing organizations, including deposits.

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The increase (decrease) during the reporting period in the aggregate amount of obligations to be paid to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management; an entity and its principal owners, management, or member of their immediate families; affiliates; or other parties with the ability to exert significant influence.

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The increase (decrease) during the reporting period in the liability Securities Sold, Not yet Purchased. Proprietary securities transactions entered into by the broker-dealer for trading or investment purposes are included in "Securities Owned and Securities Sold, Not Yet Purchased." Although proprietary trading is frequently thought of as purchasing securities for sale to others, trading securities for the broker-dealer's own account sometimes leads to a liability for the fair value of securities sold but not yet purchased, that is, sold short. The broker-dealer is then obliged to purchase the securities at a future date at the then-current market price.

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Amount of increase (decrease) in receivables classified as other.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Amount of income tax refund received from tax jurisdiction.

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The increase (decrease) in stockholders' equity during the period.

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