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Note 9 - Commitments and Off-balance Sheet Risk - Exposure to Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Contractual amounts of financial instruments with off-balance sheet risk	$ 2,221,032	$ 2,101,302
Standby Letters of Credit [Member]
Contractual amounts of financial instruments with off-balance sheet risk	26,334	26,491
Unused lines of Credit [Member] | Commercial Portfolio Segment [Member]
Contractual amounts of financial instruments with off-balance sheet risk	1,551,843	1,488,782
Unused lines of Credit [Member] | One to Four Family Mortgages [Member]
Contractual amounts of financial instruments with off-balance sheet risk	98,313	84,298
Unused lines of Credit [Member] | Credit Card Lines of Credit [Member]
Contractual amounts of financial instruments with off-balance sheet risk	196,191	172,273
Unused lines of Credit [Member] | Consumer Other Financing Receivable 1 [Member]
Contractual amounts of financial instruments with off-balance sheet risk	40,892	33,892
Loan Origination Commitments [Member]
Contractual amounts of financial instruments with off-balance sheet risk	$ 307,459	$ 295,566

X

- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

+ Details

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- Details

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- Details

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