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Loans and Allowance for Loan Losses - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) loan loans	Jun. 30, 2023 USD ($) loans	Jun. 30, 2024 USD ($) loan loans	Jun. 30, 2023 USD ($) loans	Dec. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 0		$ 0		$ 1,000
Reversal of interest income on nonaccrual loans	14	$ 11	59	$ 30
Nonaccrual loans, no allowance	963		963		1,000
Collateral-dependent loans	10,300		10,300		7,500
Restructured loans			368		506
Accrued interest receivable on our loan portfolio	$ 22,400		$ 22,400		$ 21,300
Financing Receivable, Excluding Accrued Interest, Modified In Period, Number Of Loans Modified, Nonaccrual | loans	3		3
Commercial Real Estate Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term			20 years
Owner and nonowner-occupied real estate	$ 1,870,000		$ 1,870,000
Loans secured by multi-family properties	579,700		579,700
Loans secured by farmland	27,400		27,400
Commercial loans | Extended Maturity
Financing Receivable, Allowance for Credit Loss [Line Items]
Restructured loans	$ 26		$ 26	$ 314
Financing Receivable, Excluding Accrued Interest, Modified In Period, Number Of Loans Modified, Nonaccrual	1	2	1	2
1-4 Family Residential Real Estate Loans | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term			15 years
1-4 Family Residential Real Estate Loans | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term			30 years

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