The aggregate depreciation from amortized cost basis as a percent.

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Amount of first loss support provided by the securities pledge.

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The amount of sale of acquired securities.

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The number of the company's that own the company's municipal securities.

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No definition available.

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Number of issuers of debt securities.

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Number of securities.

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Represents the number of states investments are held in.

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Percentage of first loss support provided by the securities pledged.

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Carrying value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are reported at carrying value and pledged to counterparties as collateral for financing transactions.

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No definition available.

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Percentage threshold of stockholders' equity which general obligation or revenue bonds market value of any single issuer does not exceed.

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Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Note 3 - Investment Securities (Details) $ in Thousands			12 Months Ended
Note 3 - Investment Securities (Details) $ in Thousands	Nov. 16, 2023 USD ($)	Oct. 12, 2023 USD ($)	Dec. 31, 2023 USD ($) issuer state security item	Dec. 31, 2022 USD ($) state issuer
Securities trading, at fair value			$ 22,369
Sale of securities portfolio				$ 111,400
Number of securities \| security			657
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions \| security			493
Aggregate losses of securities (as a percent)			8.22%
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year \| security			475
Gain on sale			$ 56
Number Of Charters Owning Municipal Securities \| item			4
Debt Securities, Available-for-Sale, Allowance for Credit Loss			$ 989
Amount of first loss support	$ 16,200
Trading securities			22,369
Public deposits, FHLB advances, derivative liabilities
Investment securities pledged			117,800	$ 47,000
Collateral Pledged
Securities pledged			10,100
Collateral Pledged \| First loss support to Freddie Mac in conjunction with the M-series securitization
Securities pledged			$ 16,200
General Obligation Bonds
Number of issuers \| issuer			82	118
Other investments			$ 99,400	$ 110,600
Number of states holding investments \| state			18	22
General Obligation Bonds \| Aggregate Fair Value Exceeding 5 Million
Number of states holding investments \| state			8	7
General Obligation Bonds \| Aggregate Fair Value Exceeding 5 Million \| Minimum
Other investments			$ 5,000	$ 5,000
Revenue Bonds
Number of issuers \| issuer			169	181
Other investments			$ 750,800	$ 617,200
Number of states holding investments \| state			31	29
Revenue Bonds \| Aggregate Fair Value Exceeding 5 Million
Number of states holding investments \| state			15	12
Revenue Bonds \| Aggregate Fair Value Exceeding 5 Million \| Minimum
Other investments			$ 5,000	$ 5,000
Revenue Bonds \| Aggregate Book Or Market Value Exceeded 5% of The Company Equity [Member]
Number of issuers \| issuer			2	2
Percentage threshold			5.00%	5.00%
Other securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss			$ 989
M-series Tax exempt LIHTC loans
Securities trading, at fair value		$ 16,200
Securities pledged		128,600
Trading securities		16,200
Debt Securities, Trading, Realized Gain (Loss)		2,400
Interest Only Strips, Class B Certificates \| Collateral Pledged
Amount of first loss support		$ 15,600
Percentage of first loss support		12.00%
Q-series Tax exempt LIHTC loans
Securities trading, at fair value	6,200
Securities pledged	133,300
Trading securities	6,200
Debt Securities, Trading, Realized Gain (Loss)	$ 3,100
Q-series Tax exempt LIHTC loans \| Collateral Pledged
Percentage of first loss support	12.00%