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Note 7 - Loans and Related Allowance for Credit Losses - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2025
Modified, Amortized cost	$ 2,375	$ 3,364
Total Financing Receivables, Percentage	0.20%	0.20%
Payment Deferral [Member]
Modified, Amortized cost	$ 0	$ 57
Extended Maturity [Member]
Modified, Amortized cost	2,318	3,307
Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost	0	0
Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost	0	0
Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost	0	0
Construction and Other [Member]
Modified, Amortized cost	$ 2,018	$ 2,018
Total Financing Receivables, Percentage	0.10%	0.10%
Construction and Other [Member] | Payment Deferral [Member]
Modified, Amortized cost	$ 0	$ 0
Construction and Other [Member] | Extended Maturity [Member]
Modified, Amortized cost	2,018	2,018
Construction and Other [Member] | Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost	0	0
Construction and Other [Member] | Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost	0	0
Construction and Other [Member] | Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost	0	0
Commercial And Industrial [Member]
Modified, Amortized cost		$ 889
Total Financing Receivables, Percentage		0.10%
Commercial And Industrial [Member] | Payment Deferral [Member]
Modified, Amortized cost		$ 0
Commercial And Industrial [Member] | Extended Maturity [Member]
Modified, Amortized cost		889
Commercial And Industrial [Member] | Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost		0
Commercial And Industrial [Member] | Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost		0
Commercial And Industrial [Member] | Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost		0
Home Equity Lines of Credit [Member]
Modified, Amortized cost		$ 100
Total Financing Receivables, Percentage		0.00%
Home Equity Lines of Credit [Member] | Payment Deferral [Member]
Modified, Amortized cost		$ 0
Home Equity Lines of Credit [Member] | Extended Maturity [Member]
Modified, Amortized cost		100
Home Equity Lines of Credit [Member] | Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost		0
Home Equity Lines of Credit [Member] | Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost		0
Home Equity Lines of Credit [Member] | Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost		0
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member]
Modified, Amortized cost	$ 300	$ 300
Total Financing Receivables, Percentage	0.00%	0.00%
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member] | Payment Deferral [Member]
Modified, Amortized cost	$ 0	$ 0
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member] | Extended Maturity [Member]
Modified, Amortized cost	300	300
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member] | Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost	0	0
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member] | Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost	0	0
Commercial Portfolio Segment [Member] | Owner Occupied Loan [Member] | Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost	0	0
Residential Portfolio Segment [Member]
Modified, Amortized cost	$ 57	$ 57
Total Financing Receivables, Percentage	0.00%	0.00%
Residential Portfolio Segment [Member] | Payment Deferral [Member]
Modified, Amortized cost	$ 57	$ 57
Residential Portfolio Segment [Member] | Extended Maturity [Member]
Modified, Amortized cost	0	0
Residential Portfolio Segment [Member] | Payment Deferral and Extended Maturity [Member]
Modified, Amortized cost	0	0
Residential Portfolio Segment [Member] | Interest Rate Reduction and Term Past Due [Member]
Modified, Amortized cost	0	0
Residential Portfolio Segment [Member] | Interest Rate Reduction and Principal Forgiveness [Member]
Modified, Amortized cost	$ 0	$ 0

X

- Definition

Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: 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

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

+ References

Reference 1: 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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