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Loans and Allowance for Loan Losses - Nonperforming Assets by Asset Class (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2024	Dec. 31, 2023
Nonperforming Assets [Line Items]
Restructured loans		$ 535	$ 506
Nonperforming Assets
Nonperforming Assets [Line Items]
Nonaccrual loans	[1]	7,709	3,889
Accruing loans past due more than 90 days		0	0
Restructured loans		151	13
OREO		119	99
Repossessed assets		0	0
Total nonperforming assets		7,979	4,001
Nonperforming Assets | Construction Real Estate Loans
Nonperforming Assets [Line Items]
Nonaccrual loans		40	29
Nonperforming Assets | 1-4 Family Residential Real Estate Loans
Nonperforming Assets [Line Items]
Nonaccrual loans		2,767	2,093
Nonperforming Assets | Commercial Real Estate Loans
Nonperforming Assets [Line Items]
Nonaccrual loans		2,423	528
Nonperforming Assets | Commercial loans
Nonperforming Assets [Line Items]
Nonaccrual loans		2,451	1,208
Nonperforming Assets | Loans to individuals
Nonperforming Assets [Line Items]
Nonaccrual loans		$ 28	$ 31
[1] Includes $535,000 and $506,000 of restructured loans as of March 31, 2024 and December 31, 2023, respectively.

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