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Note 9 - Fair Value Measurements - Schedule of Schedule of Financial Assets and Liabilities on a Recurring and Non-recurring Basis (Details) - Fair Value, Inputs, Level 3 [Member]	Sep. 30, 2025	Dec. 31, 2024
Minimum [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.80
Minimum [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.80
Minimum [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]
Collateral dependent loans	0
Minimum [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]
Collateral dependent loans	0
Maximum [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.99
Maximum [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.99
Maximum [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]
Collateral dependent loans	0.25
Maximum [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]
Collateral dependent loans	0.50
Weighted Average [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.899	0.94
Weighted Average [Member] | Individual Forward Sale Commitments With Investors [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Pull-through Expectations Rate [Member]
Interest rate lock commitments with customers	0.899	0.94
Weighted Average [Member] | Collateral Dependent Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value of Underlying Collateral [Member] | Measurement Input, Discount Rate [Member]
Collateral dependent loans	0.12	0
Weighted Average [Member] | Mortgage Servicing Rights [Member] | Fair Value, Nonrecurring [Member] | Industry Sources [Member] | Measurement Input, Prepayment Rate [Member]
Collateral dependent loans	0.083	0.083

X

- Definition

Value of input used to measure net derivative asset (liability).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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- Definition

Value of input used to measure servicing asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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