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Note 5 - Allowance for Credit Losses - Troubled Debt Restructurings (Details) - Real Estate 1 [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Extended Maturity [Member]
Modification amount	$ 1,829
Modification percent	1.29%
Extended Maturity [Member] | Construction and Land Development [Member]
Modification amount	$ 0
Modification percent	0.00%
Extended Maturity [Member] | Secured by Multi-family Residential Properties [Member]
Modification amount	$ 0
Modification percent	0.00%
Extended Maturity [Member] | Other Real Estate Loans [Member]
Modification amount	$ 0
Modification percent	0.00%
Extended Maturity [Member] | Commercial and Industrial Loans [Member]
Modification amount	$ 1,829
Modification percent	1.29%
Principal Forgiveness [Member]
Modification amount	$ 959
Modification percent	0.68%
Principal Forgiveness [Member] | Construction and Land Development [Member]
Modification amount	$ 0
Modification percent	0.00%
Principal Forgiveness [Member] | Secured by Multi-family Residential Properties [Member]
Modification amount	$ 0
Modification percent	0.00%
Principal Forgiveness [Member] | Other Real Estate Loans [Member]
Modification amount	$ 0
Modification percent	0.00%
Principal Forgiveness [Member] | Commercial and Industrial Loans [Member]
Modification amount	$ 959
Modification percent	0.68%
Contractual Interest Rate Reduction [Member]
Modification amount	$ 679
Modification percent	0.23%
Contractual Interest Rate Reduction [Member] | Construction and Land Development [Member]
Modification amount	$ 0
Modification percent	0.00%
Contractual Interest Rate Reduction [Member] | Secured by Multi-family Residential Properties [Member]
Modification amount	$ 462
Modification percent	0.08%
Contractual Interest Rate Reduction [Member] | Other Real Estate Loans [Member]
Modification amount	$ 0
Modification percent	0.00%
Contractual Interest Rate Reduction [Member] | Commercial and Industrial Loans [Member]
Modification amount	$ 217
Modification percent	0.15%

X

- Definition

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

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X

- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-33

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Paragraph 42
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

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