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Note 3 - Loans Receivable - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Loans receivable	$ 1,519,286	$ 1,519,019
Real Estate [Member]
Loans receivable	2,783	2,341
Business Assets [Member]
Loans receivable	5,532	3,619
Other [Member]
Loans receivable	172	216
Residential Portfolio Segment [Member]
Loans receivable	188,784	183,793
Residential Portfolio Segment [Member] | One-to-Four Family Loans [Member]
Loans receivable	145,070	148,515
Residential Portfolio Segment [Member] | One-to-Four Family Loans [Member] | Real Estate [Member]
Loans receivable	883	822
Residential Portfolio Segment [Member] | One-to-Four Family Loans [Member] | Business Assets [Member]
Loans receivable	0	0
Residential Portfolio Segment [Member] | One-to-Four Family Loans [Member] | Other [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	926,631	918,839
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Loan [Member]
Loans receivable	667,685	635,970
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Loan [Member] | Real Estate [Member]
Loans receivable	95	97
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Loan [Member] | Business Assets [Member]
Loans receivable	2,936	492
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Loan [Member] | Other [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member] | Commercial Construction and Development Portfolio Segment [Member] | Real Estate [Member]
Loans receivable	1
Commercial Real Estate Portfolio Segment [Member] | Commercial Construction and Development Portfolio Segment [Member] | Business Assets [Member]
Loans receivable	0
Commercial Real Estate Portfolio Segment [Member] | Commercial Construction and Development Portfolio Segment [Member] | Other [Member]
Loans receivable	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Loans receivable	160,664	162,580
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member] | Real Estate [Member]
Loans receivable	1,361	1,143
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member] | Business Assets [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member] | Other [Member]
Loans receivable	0	0
Commercial Construction and Development Portfolio Segment [Member] | Real Estate [Member]
Loans receivable		1
Commercial Construction and Development Portfolio Segment [Member] | Business Assets [Member]
Loans receivable		0
Commercial Construction and Development Portfolio Segment [Member] | Other [Member]
Loans receivable		0
Home Equity Portfolio Segment [Member]
Loans receivable	109,278	108,073
Home Equity Portfolio Segment [Member] | Real Estate [Member]
Loans receivable	414	278
Home Equity Portfolio Segment [Member] | Business Assets [Member]
Loans receivable	0	0
Home Equity Portfolio Segment [Member] | Other [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member]
Loans receivable	23,154	24,424
Consumer Portfolio Segment [Member] | Real Estate [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member] | Business Assets [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member] | Other [Member]
Loans receivable	168	202
Commercial Portfolio Segment [Member]
Loans receivable	271,439	283,890
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Loans receivable	151,580	149,431
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Real Estate [Member]
Loans receivable	0	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Business Assets [Member]
Loans receivable	366	482
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Other [Member]
Loans receivable	4	14
Commercial Portfolio Segment [Member] | Agricultural Loan [Member]
Loans receivable	119,859	134,459
Commercial Portfolio Segment [Member] | Agricultural Loan [Member] | Real Estate [Member]
Loans receivable	29	0
Commercial Portfolio Segment [Member] | Agricultural Loan [Member] | Business Assets [Member]
Loans receivable	2,230	2,645
Commercial Portfolio Segment [Member] | Agricultural Loan [Member] | Other [Member]
Loans receivable	$ 0	$ 0

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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