Note 3 - Debt Securities (Details Textual) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings			$ 0
Number of Securities in Unrealized Loss Position	129		129		113
Percentage of Combined Depreciation of Combined Reported Value of Aggregate Securities Portfolio	5.79%		5.79%		6.59%
Proceeds from Sale of Debt Securities, Available-for-Sale			$ 38,979	$ 0
Debt Securities, Available-for-Sale, Realized Gain (Loss)	$ (28)	$ 0	(21)	$ 0
Debt Securities, Available-for-Sale, Amortized Cost	332,556		332,556		$ 320,123
Asset Pledged as Collateral [Member]
Debt Securities, Available-for-Sale, Amortized Cost	37,880		37,880		$ 22,430
Surrey [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Securities	$ 20,930		$ 20,930

The amount of securities recognized as of the acquisition date.

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- Definition

Represents the number of securities in unrealized loss position.

+ References

No definition available.

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Represents the percentage of combined depreciation of combined reported value of aggregate securities portfolio.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
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- Definition

Amount of other-than-temporary impairment (OTTI) on investment in debt security, recognized in earnings.

+ References

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- Definition

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).

+ References

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