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Note 4 - Loans Receivable and Credit Disclosures - Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans receivable	$ 1,320,813	$ 1,294,178
Financing receivable, recorded investment, 90 days past due and still accruing	736	109
Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	3,088	2,242
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	3,837	2,084
Financial Asset, Past Due [Member]
Loans receivable	6,925	4,326
Financial Asset, Not Past Due [Member]
Loans receivable	1,313,888	1,289,852
Construction Real Estate [Member]
Loans receivable	59,281	63,050
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	0	359
Construction Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	63	66
Construction Real Estate [Member] | Financial Asset, Past Due [Member]
Loans receivable	63	425
Construction Real Estate [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	59,218	62,625
Family Residential Real Estate 1-4 [Member]
Loans receivable	309,704	289,404
Financing receivable, recorded investment, 90 days past due and still accruing	23	3
Family Residential Real Estate 1-4 [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	1,744	1,020
Family Residential Real Estate 1-4 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	204	302
Family Residential Real Estate 1-4 [Member] | Financial Asset, Past Due [Member]
Loans receivable	1,948	1,322
Family Residential Real Estate 1-4 [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	307,756	288,082
Multifamily [Member]
Loans receivable	200,209	195,536
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	983
Multifamily [Member] | Financial Asset, Past Due [Member]
Loans receivable	0	983
Multifamily [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	200,209	194,553
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	350,493	359,266
Financing receivable, recorded investment, 90 days past due and still accruing	0	106
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	332	119
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	2,501	106
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans receivable	2,833	225
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	347,660	359,041
Agriculture Real Estate [Member]
Loans receivable	159,880	161,517
Financing receivable, recorded investment, 90 days past due and still accruing	660	0
Agriculture Real Estate [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	651	0
Agriculture Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	660	0
Agriculture Real Estate [Member] | Financial Asset, Past Due [Member]
Loans receivable	1,311	0
Agriculture Real Estate [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	158,569	161,517
Commercial Portfolio Segment [Member]
Loans receivable	90,023	89,729
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Commercial Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	288	559
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	356	98
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loans receivable	644	657
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	89,379	89,072
Agriculture [Member]
Loans receivable	134,157	119,136
Financing receivable, recorded investment, 90 days past due and still accruing	53	0
Agriculture [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans receivable	68	169
Agriculture [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable	53	529
Agriculture [Member] | Financial Asset, Past Due [Member]
Loans receivable	121	698
Agriculture [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	134,036	118,438
Consumer and Other [Member]
Loans receivable	17,066	16,540
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	5	16
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	5	16
Consumer and Other [Member] | Financial Asset, Not Past Due [Member]
Loans receivable	$ 17,061	$ 16,524

X

- Definition

Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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-Topic 326
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-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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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
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-Name Accounting Standards Codification
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Topic 326
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