Note 16 - Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Available-for-sale debt securities	$ 169,849	$ 280,961
Derivative assets	116	136
Fair Value, Recurring [Member]
Available-for-sale debt securities	169,849	280,961
Equity securities	55	55
Fair value loans	2,993	3,421
Derivative assets	116	136
Deferred compensation assets	8,571	6,729
Deferred compensation liabilities	10,189	8,282
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities	0	0
Equity securities	0	0
Fair value loans	0	0
Derivative assets	0	0
Deferred compensation assets	8,571	6,729
Deferred compensation liabilities	10,189	8,282
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities	169,849	280,961
Equity securities	55	55
Fair value loans	0	0
Derivative assets	116	136
Deferred compensation assets	0	0
Deferred compensation liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities	0	0
Equity securities	0	0
Fair value loans	2,993	3,421
Derivative assets	0	0
Deferred compensation assets	0	0
Deferred compensation liabilities	0	0
Fair Value, Recurring [Member] \| US Treasury Securities [Member]
Available-for-sale debt securities	55,769	145,826
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities	55,769	145,826
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member]
Available-for-sale debt securities		5,749
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities		0
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities		5,749
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities		0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Available-for-sale debt securities	13,837	19,377
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities	13,837	19,377
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member]
Available-for-sale debt securities	27,542	27,081
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities	27,542	27,081
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| Mortgage-backed Agency Securities [Member]
Available-for-sale debt securities	72,701	82,928
Fair Value, Recurring [Member] \| Mortgage-backed Agency Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-sale debt securities	0	0
Fair Value, Recurring [Member] \| Mortgage-backed Agency Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-sale debt securities	72,701	82,928
Fair Value, Recurring [Member] \| Mortgage-backed Agency Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-sale debt securities	$ 0	$ 0

Fair value portion of deferred compensation assets.

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- Definition

Fair value portion of deferred compensation liabilities.

+ References

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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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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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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