Note 5 - Investment Banking and New Issue and Net Trading - Net Trading (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Net realized gains (losses) - trading inventory	$ 7,471	$ 4,228
Net unrealized gains (losses) - trading inventory	(831)	625
Net gains and losses	6,640	4,853
Interest income- trading inventory	792	830
Interest income-reverse repos	4,062	9,541
Interest income	4,854	10,371
Interest expense-repos	(3,708)	(8,502)
Interest expense-margin payable	(117)	(651)
Interest expense	(3,825)	(9,153)
Other trading revenue	5,531	3,140
Net trading	$ 13,200	$ 9,211

Represents interest income (expense) including unrealized gains and losses.

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Represents interest income from repurchase agreements.

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Amount of trading revenue, classified as other, during the reporting period.

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Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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Gross expenses on securities sold coupled with an agreement to repurchase the same from the same counterparty at a fixed or determinable price within a fixed or variable time period.

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The aggregate interest expense incurred on short-term borrowings including commercial paper, Federal Home Loan Bank and Federal Reserve Bank advances and other short term borrowings.

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Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating.

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