Note 3 - Investment Securities - Schedule of Available-for-sale Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 65,761	$ 69,665
Gross unrealized gains, available-for-sale	4	26
Gross unrealized losses, available-for-sale	(10,018)	(9,763)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	55,747	59,928
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	21,298	23,446
Gross unrealized gains, available-for-sale	0	0
Gross unrealized losses, available-for-sale	(4,105)	(3,931)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	17,193	19,515
Subordinated Debt [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	8,971	9,970
Gross unrealized gains, available-for-sale	0	0
Gross unrealized losses, available-for-sale	(1,064)	(1,503)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	7,907	8,467
Preferred Stocks [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	453
Gross unrealized gains, available-for-sale	0
Gross unrealized losses, available-for-sale	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	453
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	10,623	10,649
Gross unrealized gains, available-for-sale	0	0
Gross unrealized losses, available-for-sale	(2,422)	(2,342)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	8,201	8,307
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	22,024	22,668
Gross unrealized gains, available-for-sale	0	23
Gross unrealized losses, available-for-sale	(2,403)	(1,949)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	19,621	20,742
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	2,392	2,932
Gross unrealized gains, available-for-sale	4	3
Gross unrealized losses, available-for-sale	(24)	(38)
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 2,372	$ 2,897

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) 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/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amortized cost excluding accrued interest, before allowance for credit loss, 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 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, 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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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