Loans and Allowance for Credit Losses - Balances in Allowance for loan losses and Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Allowance for credit losses:
Balance, beginning of year	$ 700	$ 675	$ 675
Provision charged to expense	45	31
Losses charged off			(194)
Balance, end of year	745	706	700
Loans:
Ending balance	100,245		96,905
Ending balance: individually evaluated	847		844
Unfunded loan commitments
Allowance for credit losses:
Balance, beginning of year	17	22	22
Provision charged to expense	11	(5)
Balance, end of year	28	17	17
Mortgage loans on real estate
Loans:
Ending balance	91,329		88,770
Ending balance: individually evaluated	847		844
Mortgage loans on real estate \| Residential 1-4 family
Allowance for credit losses:
Balance, beginning of year	271	247	247
Provision charged to expense	(5)	9
Balance, end of year	266	256	271
Loans:
Ending balance	65,146		65,721
Ending balance: individually evaluated	356		348
Mortgage loans on real estate \| Residential 1-4 family \| Unfunded loan commitments
Allowance for credit losses:
Balance, beginning of year	2	2	2
Provision charged to expense	2	2
Balance, end of year	4	4	2
Mortgage loans on real estate \| Commercial
Allowance for credit losses:
Balance, beginning of year	339	332	332
Provision charged to expense	44	16
Losses charged off			(179)
Balance, end of year	383	348	339
Loans:
Ending balance	24,735		21,412
Ending balance: individually evaluated	491		496
Mortgage loans on real estate \| Commercial \| Unfunded loan commitments
Allowance for credit losses:
Balance, beginning of year	7	10	10
Provision charged to expense	14	(3)
Balance, end of year	21	7	7
Mortgage loans on real estate \| Construction and Land Development
Allowance for credit losses:
Balance, beginning of year	13	15	15
Provision charged to expense	(2)	(4)
Balance, end of year	11	11	13
Loans:
Ending balance	1,448		1,637
Mortgage loans on real estate \| Construction and Land Development \| Unfunded loan commitments
Allowance for credit losses:
Balance, beginning of year	6	8	8
Provision charged to expense	(6)	(6)
Balance, end of year		2	6
Commercial loans
Allowance for credit losses:
Balance, beginning of year	60	65	65
Provision charged to expense	6	10
Losses charged off			(13)
Balance, end of year	66	75	60
Loans:
Ending balance	5,099		4,656
Commercial loans \| Unfunded loan commitments
Allowance for credit losses:
Balance, beginning of year	2	2	2
Provision charged to expense	1	2
Balance, end of year	3	4	2
Consumer
Allowance for credit losses:
Balance, beginning of year	17	16	16
Provision charged to expense	2
Losses charged off			(2)
Balance, end of year	19	$ 16	17
Loans:
Ending balance	$ 3,817		$ 3,479

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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- Definition

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

+ 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 3: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. 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 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

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-Topic 310
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