Note 4 -Loans - Activity In The Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Balance	$ 11,270	$ 7,956	$ 10,525	$ 5,646	$ 5,646
Provision for (recovery of) credit losses	681	10	538	173
Losses charged off	(122)	(59)	(286)	(144)
Recoveries	$ 38	$ 25	$ 139	$ 61
Ratio of net charge-offs to average loans	0.02%	0.01%	0.01%	0.01%
Balance	$ 11,867	$ 7,932	$ 11,867	$ 7,932	10,525
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				2,196	2,196
Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		188
Provision for (recovery of) credit losses	0		763
Commercial and Industrial Portfolio Segment [Member]
Balance	1,568	1,065	1,039	1,300	1,300
Provision for (recovery of) credit losses	(214)	2	163	294
Losses charged off	(22)	0	(22)	(15)	(15)
Recoveries	$ 0	$ 0	$ 0	$ 0
Ratio of net charge-offs to average loans	0.07%	0.00%	0.02%	0.02%
Balance	$ 1,332	$ 1,067	$ 1,332	$ 1,067	1,039
Commercial and Industrial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(512)	(512)
Commercial and Industrial Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		101
Provision for (recovery of) credit losses	0		51
Commercial Real Estate Portfolio Segment [Member]
Balance	6,228	5,023	5,414	3,609	3,609
Provision for (recovery of) credit losses	258	(70)	818	(96)
Losses charged off	0	0	0	0	0
Recoveries	$ 0	$ 0	$ 0	$ 0
Ratio of net charge-offs to average loans	0.00%	0.00%	0.00%	0.00%
Balance	$ 6,486	$ 4,953	$ 6,486	$ 4,953	5,414
Commercial Real Estate Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				1,440	1,440
Commercial Real Estate Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		8
Provision for (recovery of) credit losses	0		246
Residential Portfolio Segment [Member]
Balance	3,222	1,326	3,816	624	624
Provision for (recovery of) credit losses	572	125	(576)	(9)
Losses charged off	0	(4)	0	(4)	(4)
Recoveries	$ 0	$ 0	$ 9	$ 0
Ratio of net charge-offs to average loans	0.00%	0.01%	0.00%	0.00%
Balance	$ 3,794	$ 1,447	$ 3,794	$ 1,447	3,816
Residential Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				836	836
Residential Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		79
Provision for (recovery of) credit losses	0		466
Consumer Portfolio Segment [Member]
Balance	212	535	238	86	86
Provision for (recovery of) credit losses	0	(75)	(32)	(66)
Losses charged off	0	(1)	(43)	(10)	(83)
Recoveries	$ 19	$ 1	$ 68	$ 4
Ratio of net charge-offs to average loans	(0.34%)	0.00%	(0.14%)	0.03%
Balance	$ 231	$ 460	$ 231	$ 460	238
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				446	446
Consumer Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		0
Provision for (recovery of) credit losses	0		0
Agricultural Portfolio [Member]
Balance	38	5	18	22	22
Provision for (recovery of) credit losses	41	0	61	(8)
Losses charged off	(57)	0	(57)	0	0
Recoveries	$ 0	$ 0	$ 0	$ 0
Ratio of net charge-offs to average loans	1.82%	0.00%	0.63%	0.00%
Balance	$ 22	$ 5	$ 22	$ 5	18
Agricultural Portfolio [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(9)	(9)
Agricultural Portfolio [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		0
Provision for (recovery of) credit losses	0		0
Other Loans [Member]
Balance	2	2	0	5	5
Provision for (recovery of) credit losses	24	28	104	58
Losses charged off	(43)	(54)	(164)	(115)	(166)
Recoveries	$ 19	$ 24	$ 62	$ 57
Ratio of net charge-offs to average loans	26.19%	154.44%	61.65%	106.23%
Balance	$ 2	$ 0	$ 2	$ 0	0
Other Loans [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				$ (5)	$ (5)
Other Loans [Member] \| Eagle Financial Bancorp, Inc. [Member]
Acquisition of Eagle Financial Bancorp, Inc. - PCD Loans	0		0
Provision for (recovery of) credit losses	$ 0		$ 0

Percentage of writeoff after recovery to average financing receivables outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (4)
-Publisher SEC

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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