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Loans and Allowance for Loan and Lease Losses - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) Loan	Dec. 31, 2022 USD ($) DebtSecurityNumber	Dec. 31, 2022 USD ($) Contract	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2021 USD ($) DebtSecurityNumber	Dec. 31, 2021 USD ($) Contract	Dec. 31, 2020 USD ($)
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans and Leases Receivable, Related Parties, Ending Balance	$ 200				$ 300
Loans and Leases Receivable, Related Parties, Additions	0				0
Loans and Leases Receivable, Related Parties, Proceeds	100				100
Loan, aggregate principal balance	10,726	$ 10,726	$ 10,726	$ 10,726	10,653	$ 10,653	$ 10,653	$ 10,653
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	1,700	1,700	1,700	1,700	2,000	2,000	2,000	2,000
Financing Receivable, Troubled Debt Restructuring	100	100	100	100	100	100	100	100
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	60				52
Interest Income Recorded	29	$ 29	$ 29	29	30	$ 30	$ 30	30
Number of loans		0	4			0	4
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	0	$ 0	$ 0	$ 0	0	$ 0	$ 0	$ 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract				0				0
Loans, allowance for loan losses	9,422	9,422	9,422	$ 9,422	8,320	8,320	8,320	$ 8,320	$ 7,470
Pledged as Collateral [Member] | FHLB Borrowings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans pledged as collateral	68,200	68,200	68,200	68,200	66,600	66,600	66,600	66,600
Restructured Loan Modified through Extended Maturity and Payment Schedule Modification [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Financing Receivable, Restructuring Recorded Investment With Nonaccrual Status	500	500	500	500
Loans, allowance for loan losses	6	6	6	6	$ 7	$ 7	$ 7	$ 7
Minimum [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans Modified in a Troubled Debt Restructuring, Individually Evaluated for Impairment, Principal Balance, Threshold	500	500	500	500
Minimum [Member] | ALC [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	$ 50	$ 50	$ 50	$ 50
Real Estate [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Percentage of Loan Portfolio	53.00%	53.00%	53.00%	53.00%	54.00%	54.00%	54.00%	54.00%

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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