Note 4 - Loans and Allowance for Credit Losses - Non-accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Nonaccrual, No Allowance	$ 0	$ 0
Nonaccrual loans, with allowance	0	2,440
Still accruing	1,262	0
Construction and land development	0	0
Nonaccrual loans	0	2,440
Nonaccrual, No Allowance	1,262	0
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Nonaccrual loans, with allowance	0	2,440
Still accruing	1,262	0
Construction and land development	0	0
Nonaccrual loans	0	2,440
Nonaccrual, No Allowance	1,262	0
Construction and Land Development [Member]
Nonaccrual, No Allowance	0	0
Nonaccrual loans, with allowance	0	0
Still accruing	0	0
Construction and land development	0	0
Nonaccrual loans	0	0
Nonaccrual, No Allowance	0	0
Residential Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Nonaccrual loans, with allowance	0	0
Still accruing	0	0
Construction and land development	0	0
Nonaccrual loans	0	0
Nonaccrual, No Allowance	0	0
Commercial Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Nonaccrual loans, with allowance	0	0
Still accruing	0	0
Construction and land development	0	0
Nonaccrual loans	0	0
Nonaccrual, No Allowance	0	0
Consumer Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Nonaccrual loans, with allowance	0	0
Still accruing	0	0
Construction and land development	0	0
Nonaccrual loans	0	0
Nonaccrual, No Allowance	$ 0	$ 0

Amortized cost of financing receivable on nonaccrual status with allowance for credit loss. Excludes net investment in lease.

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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