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Note 3 - Loans Receivable and Allowance for Credit Losses - Loans - Schedule of Amortized Cost of Nonaccrual Loans (Details) - USD ($) $ in Thousands		Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Nonaccrual, No Allowance		$ 13,747	$ 5,682
Financing Receivable, Nonaccrual, With Allowance		4,627	7,919
Financing Receivable, Nonaccrual	[1]	18,374	13,601
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Nonaccrual, No Allowance		11,197	2,771
Financing Receivable, Nonaccrual, With Allowance		0	4,979
Financing Receivable, Nonaccrual	[1]	11,197	7,750
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Nonaccrual, No Allowance		2,047	2,771
Financing Receivable, Nonaccrual, With Allowance		0	0
Financing Receivable, Nonaccrual	[1]	2,047	2,771
Commercial Real Estate Portfolio Segment [Member] | Commercial and Speculative Construction and Development [Member]
Financing Receivable, Nonaccrual, No Allowance		9,150	0
Financing Receivable, Nonaccrual, With Allowance		0	4,979
Financing Receivable, Nonaccrual	[1]	9,150	4,979
Residential Portfolio Segment [Member]
Financing Receivable, Nonaccrual, No Allowance		2,116	425
Financing Receivable, Nonaccrual, With Allowance		0	0
Financing Receivable, Nonaccrual	[1]	2,116	425
Residential Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Nonaccrual, No Allowance		1,799	164
Financing Receivable, Nonaccrual, With Allowance		0	0
Financing Receivable, Nonaccrual	[1]	1,799	164
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Nonaccrual, No Allowance		317	261
Financing Receivable, Nonaccrual, With Allowance		0	0
Financing Receivable, Nonaccrual	[1]	317	261
Consumer Portfolio Segment [Member]
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual, With Allowance		4,462	1,980
Financing Receivable, Nonaccrual	[1]	4,462	1,980
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual, With Allowance		3,802	1,677
Financing Receivable, Nonaccrual	[1]	3,802	1,677
Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual, With Allowance		620	289
Financing Receivable, Nonaccrual	[1]	620	289
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual, With Allowance		40	14
Financing Receivable, Nonaccrual	[1]	40	14
Commercial Business Portfolio Segment [Member]
Financing Receivable, Nonaccrual	[1]	599	3,446
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Nonaccrual, No Allowance		434	2,486
Financing Receivable, Nonaccrual, With Allowance		165	960
Financing Receivable, Nonaccrual	[1]	$ 599	$ 3,446
[1] Includes loans less than 90 days past due as applicable.

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- Definition

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

+ References

No definition available.

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. 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 (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

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+ References

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