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Income tax expense (benefit) during the period related to net realized gains (losses) on sales of securities.

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Investment securities.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of restricted 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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Indicates type of restriction 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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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Cost of the investment.

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Number of shares of investment owned.

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Amount of cash inflow from sale of 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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The carrying value of securities purchased to be resold in reverse repurchase transactions as of the balance sheet date.

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No definition available.

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Note 7 - Investment Securities (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Investment Securities [Line Items]
Proceeds from sale of investment securities			$ 6,752,000	$ 0
Available-for-sale securities pledged as collateral	$ 296,472,000		$ 296,472,000		$ 234,159,000
Debt Securities, Available-for-Sale, Restriction Type [Extensible Enumeration]	us-gaap:AssetPledgedAsCollateralMember		us-gaap:AssetPledgedAsCollateralMember		us-gaap:AssetPledgedAsCollateralMember
Other than temporary impairment charges recognized for debt securities			$ 0	0
Net unrealized gain on equity securities	$ 268,000	$ 0	268,000	0
Securities for reverse of makewhole agreement	23,000,000		23,000,000
Investment equity securities	268,000		268,000		$ 0
Debt Securities [Member]
Investment Securities [Line Items]
Income tax expense (benefit) related to net realized gains (losses) on sales of securities	$ 21,000	$ 0	$ 21,000	$ 0
Class B-3 Common Stock [Member]
Investment Securities [Line Items]
convertible shares			1,625
Common Class A [Member]
Investment Securities [Line Items]
convertible shares			204
Net unrealized gain on equity securities			$ 268,000,000
Common Class C [Member]
Investment Securities [Line Items]
Number of shares owned	408		408
convertible shares			612
Common Class C [Member] \| Minimum [Member]
Investment Securities [Line Items]
convertible shares			204
VISA Class B-2 Stock [Member]
Investment Securities [Line Items]
Number of shares owned	3,251		3,251
Number of shares owned at cost	$ 0		$ 0