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Note 16 - Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2021	[1]
Securities available for sale	$ 280,961	$ 300,349	$ 83,358
Derivative assets	136	199
Fair Value, Recurring [Member]
Securities available for sale	280,961	300,349
Equity securities	55	55
Fair value loans	3,421	3,784
Derivative assets	136	199
Deferred compensation assets	6,729	5,142
Deferred compensation liabilities	8,282	5,142
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Equity securities	0	0
Fair value loans	0	0
Derivative assets	0	0
Deferred compensation assets	6,729	5,142
Deferred compensation liabilities	8,282	5,142
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	280,961	300,349
Equity securities	55	55
Fair value loans	0	0
Derivative assets	136	199
Deferred compensation assets	0	0
Deferred compensation liabilities	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	0	0
Equity securities	0	0
Fair value loans	3,421	3,784
Derivative assets	0	0
Deferred compensation assets	0	0
Deferred compensation liabilities	0	0
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Securities available for sale	5,749	1,485
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	5,749	1,485
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Securities available for sale	145,826	157,264
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	145,826	157,264
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Securities available for sale	19,377	23,309
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	19,377	23,309
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Securities available for sale	27,081	34,857
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	27,081	34,857
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | Mortgage-backed Agency Securities [Member]
Securities available for sale	82,928	83,434
Fair Value, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available for sale	0	0
Fair Value, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available for sale	82,928	83,434
Fair Value, Recurring [Member] | Mortgage-backed Agency Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available for sale	$ 0	$ 0
[1] Per our analysis no ACL was necessary for investment securities available for sale.

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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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- Definition

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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.

+ References

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