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Note 3 - Loans Receivable - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Loans receivable	$ 1,519,286	$ 1,519,019
Allowance for credit losses	(17,430)	(17,370)
Total loans, net	1,501,856	1,501,649
Residential Portfolio Segment [Member]
Loans receivable	188,784	183,793
Allowance for credit losses	(1,973)	(1,965)	$ (1,904)	$ (1,911)
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	926,631	918,839
Allowance for credit losses	(11,363)	(11,295)	(10,830)	(10,907)
Home Equity Portfolio Segment [Member]
Loans receivable	109,278	108,073
Allowance for credit losses	(551)	(547)	(551)	(553)
Consumer Portfolio Segment [Member]
Loans receivable	23,154	24,424
Allowance for credit losses	(45)	(84)	(239)	(245)
Commercial Portfolio Segment [Member]
Loans receivable	271,439	283,890
Allowance for credit losses	$ (3,498)	$ (3,479)	$ (3,196)	$ (3,234)

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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X

- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
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-Section S45
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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