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Note 6 - Loans Receivable and Credit Disclosures - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Loans receivable	$ 1,293,568	$ 1,320,813
Financing receivable, recorded investment, 90 days past due and still accruing	174	736
Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	5,931	3,088
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	4,335	3,837
Financial Asset, Past Due [Member]
Loans receivable	10,266	6,925
Financial Asset, Not Past Due [Member]
Loans receivable	1,283,302	1,313,888
Construction Real Estate [Member]
Loans receivable	57,966	59,281
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Construction Real Estate [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	1,346	0
Construction Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	0	63
Construction Real Estate [Member] | Financial Asset, Past Due [Member]
Loans receivable	1,346	63
Construction Real Estate [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	56,620	59,218
Family Residential Real Estate 1-4 [Member]
Loans receivable	315,827	309,704
Financing receivable, recorded investment, 90 days past due and still accruing	148	23
Family Residential Real Estate 1-4 [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	3,309	1,744
Family Residential Real Estate 1-4 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	148	204
Family Residential Real Estate 1-4 [Member] | Financial Asset, Past Due [Member]
Loans receivable	3,457	1,948
Family Residential Real Estate 1-4 [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	312,370	307,756
Multifamily [Member]
Loans receivable	209,099	200,209
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Multifamily [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	0	0
Multifamily [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	0	0
Multifamily [Member] | Financial Asset, Past Due [Member]
Loans receivable	0	0
Multifamily [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	209,099	200,209
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	315,952	350,493
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	619	332
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	2,620	2,501
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans receivable	3,239	2,833
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	312,713	347,660
Agriculture Real Estate [Member]
Loans receivable	158,075	159,880
Financing receivable, recorded investment, 90 days past due and still accruing	0	660
Agriculture Real Estate [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	25	651
Agriculture Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	0	660
Agriculture Real Estate [Member] | Financial Asset, Past Due [Member]
Loans receivable	25	1,311
Agriculture Real Estate [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	158,050	158,569
Commercial Portfolio Segment [Member]
Loans receivable	94,777	90,023
Financing receivable, recorded investment, 90 days past due and still accruing	26	0
Commercial Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	499	288
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	476	356
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans receivable	975	644
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	93,802	89,379
Agriculture [Member]
Loans receivable	126,051	134,157
Financing receivable, recorded investment, 90 days past due and still accruing	0	53
Agriculture [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	132	68
Agriculture [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	1,091	53
Agriculture [Member] | Financial Asset, Past Due [Member]
Loans receivable	1,223	121
Agriculture [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	124,828	134,036
Consumer and Other [Member]
Loans receivable	15,821	17,066
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Consumer and Other [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	1	5
Consumer and Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	0	0
Consumer and Other [Member] | Financial Asset, Past Due [Member]
Loans receivable	1	5
Consumer and Other [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	$ 15,820	$ 17,061

X

- 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, 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 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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