Note 4 -Loans - Activity In The Allowance For Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 10,525	$ 5,646	$ 5,506
PCD Loans			0
Provision for (recovery of) credit losses	1,266	653	250
Losses charged off	(903)	(268)	(266)
Recoveries	162	83	156
Balance	12,001	10,525	5,646
Individually evaluated for credit loss	1,378	19	21
Collectively evaluated for credit loss	10,623	10,506	$ 5,625
Individually evaluated for credit loss	5,135	3,937
Collectively evaluated for credit loss	1,716,677	1,719,534
Balance, end of year	$ 1,721,812	$ 1,723,471
Percent of loans in each category to total loans	100.00%	100.00%	100.00%
Ratio of net charge-offs to average loans	0.04%	0.01%	0.01%
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ 2,196
Balance			$ 2,196
Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 188
Provision for (recovery of) credit losses	763
Cincinnati Bancorp, Inc. [Member]
PCD Loans		493
Provision for (recovery of) credit losses		1,722
Commercial and Industrial Portfolio Segment [Member]
Balance	1,039	1,300	1,095
PCD Loans			0
Provision for (recovery of) credit losses	987	266	205
Losses charged off	(610)	(15)	0
Recoveries	5	0	0
Balance	1,573	1,039	1,300
Individually evaluated for credit loss	121	2	4
Collectively evaluated for credit loss	1,452	1,037	$ 1,296
Individually evaluated for credit loss	1,431	107
Collectively evaluated for credit loss	117,180	120,434
Balance, end of year	$ 118,611	$ 120,541
Percent of loans in each category to total loans	6.90%	7.00%	8.60%
Ratio of net charge-offs to average loans	0.50%	0.01%	0.00%
Commercial and Industrial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ (512)
Balance			$ (512)
Commercial and Industrial Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 101
Provision for (recovery of) credit losses	51
Commercial and Industrial Portfolio Segment [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		0
Provision for (recovery of) credit losses		0
Commercial Real Estate Portfolio Segment [Member]
Balance	5,414	3,609	3,607
PCD Loans			0
Provision for (recovery of) credit losses	869	(176)	69
Losses charged off	0	0	(67)
Recoveries	0	0	0
Balance	6,537	5,414	3,609
Individually evaluated for credit loss	1,204	12	11
Collectively evaluated for credit loss	5,333	5,402	$ 3,598
Individually evaluated for credit loss	3,205	3,293
Collectively evaluated for credit loss	1,108,927	1,102,351
Balance, end of year	$ 1,112,132	$ 1,105,644
Percent of loans in each category to total loans	64.60%	64.20%	66.90%
Ratio of net charge-offs to average loans	0.00%	0.00%	0.01%
Commercial Real Estate Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ 1,440
Balance			$ 1,440
Commercial Real Estate Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 8
Provision for (recovery of) credit losses	246
Commercial Real Estate Portfolio Segment [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		90
Provision for (recovery of) credit losses		451
Residential Portfolio Segment [Member]
Balance	3,816	624	665
PCD Loans			0
Provision for (recovery of) credit losses	(736)	689	(81)
Losses charged off	0	(4)	(5)
Recoveries	9	0	45
Balance	3,634	3,816	624
Individually evaluated for credit loss	53	5	6
Collectively evaluated for credit loss	3,581	3,811	$ 618
Individually evaluated for credit loss	499	537
Collectively evaluated for credit loss	456,600	460,067
Balance, end of year	$ 457,099	$ 460,604
Percent of loans in each category to total loans	26.50%	26.70%	21.80%
Ratio of net charge-offs to average loans	0.00%	0.00%	(0.01%)
Residential Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ 836
Balance			$ 836
Residential Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 79
Provision for (recovery of) credit losses	466
Residential Portfolio Segment [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		403
Provision for (recovery of) credit losses		1,268
Consumer Portfolio Segment [Member]
Balance	238	86	105
PCD Loans			0
Provision for (recovery of) credit losses	(44)	(219)	(12)
Losses charged off	(43)	(83)	(37)
Recoveries	69	5	30
Balance	220	238	86
Individually evaluated for credit loss	0	0	0
Collectively evaluated for credit loss	220	238	$ 86
Individually evaluated for credit loss	0	0
Collectively evaluated for credit loss	20,498	25,600
Balance, end of year	$ 20,498	$ 25,600
Percent of loans in each category to total loans	1.20%	1.50%	2.00%
Ratio of net charge-offs to average loans	(0.11%)	0.28%	0.02%
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ 446
Balance			$ 446
Consumer Portfolio Segment [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 0
Provision for (recovery of) credit losses	0
Consumer Portfolio Segment [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		0
Provision for (recovery of) credit losses		3
Agricultural Portfolio [Member]
Balance	18	22	30
PCD Loans			0
Provision for (recovery of) credit losses	62	5	(8)
Losses charged off	(57)	0	0
Recoveries	1	0	0
Balance	24	18	22
Individually evaluated for credit loss	0	0	0
Collectively evaluated for credit loss	24	18	$ 22
Individually evaluated for credit loss	0	0
Collectively evaluated for credit loss	13,293	11,000
Balance, end of year	$ 13,293	$ 11,000
Percent of loans in each category to total loans	0.80%	0.60%	0.70%
Ratio of net charge-offs to average loans	0.45%	0.00%	0.00%
Agricultural Portfolio [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ (9)
Balance			$ (9)
Agricultural Portfolio [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 0
Provision for (recovery of) credit losses	0
Agricultural Portfolio [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		0
Provision for (recovery of) credit losses		0
Other Loans [Member]
Balance	0	5	4
PCD Loans			0
Provision for (recovery of) credit losses	128	88	77
Losses charged off	(193)	(166)	(157)
Recoveries	78	78	81
Balance	13	0	5
Individually evaluated for credit loss	0	0	0
Collectively evaluated for credit loss	13	0	$ 5
Individually evaluated for credit loss	0	0
Collectively evaluated for credit loss	179	82
Balance, end of year	$ 179	$ 82
Percent of loans in each category to total loans	0.00%	0.00%	0.00%
Ratio of net charge-offs to average loans	54.09%	117.65%	100.00%
Other Loans [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance		$ (5)
Balance			$ (5)
Other Loans [Member] \| Eagle Financial Bancorp, Inc. [Member]
PCD Loans	$ 0
Provision for (recovery of) credit losses	$ 0
Other Loans [Member] \| Cincinnati Bancorp, Inc. [Member]
PCD Loans		0
Provision for (recovery of) credit losses		$ 0

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
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