Fair Value Measurement - Schedule of Fair Values and Carrying Amounts, Significant Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest bearing deposits in banks	$ 15,183	$ 16,428
Loans held for sale	3,145	1,178
Accrued interest receivable	2,400	3,100
Deposits
Noninterest bearing	238,636	286,145
Interest bearing	633,019	762,722
Time	252,031	153,045
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	35,803	37,885
Interest bearing deposits in banks	0	0
Investment securities	3,947	3,815
Loans held for sale	0	0
Accrued interest receivable	0	0
Deposits
Noninterest bearing	238,636	286,145
Interest bearing	633,019	762,722
Time	0	0
Borrowed funds
Short-term borrowed funds	0	0
Long-term	0
Subordinated notes	0	0
Accrued interest payable	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Construction Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Interest bearing deposits in banks	15,183	16,428
Investment securities	264,968	247,716
Loans held for sale	3,192	1,202
Accrued interest receivable	1,385	1,014
Deposits
Noninterest bearing	0	0
Interest bearing	0	0
Time	248,386	149,166
Borrowed funds
Short-term borrowed funds	25,114	49,997
Long-term	95,028
Subordinated notes	13,951	14,037
Accrued interest payable	977	354
Significant Other Observable Inputs (Level 2) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2) | Construction Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2) | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2) | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Other Observable Inputs (Level 2) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Interest bearing deposits in banks	0	0
Investment securities	0	0
Loans held for sale	0	0
Accrued interest receivable	2,416	3,149
Deposits
Noninterest bearing	0	0
Interest bearing	0	0
Time	0	0
Borrowed funds
Short-term borrowed funds	0	0
Long-term	0
Subordinated notes	0	0
Accrued interest payable	0	0
Significant Unobservable Inputs (Level 3) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	343,012	319,066
Significant Unobservable Inputs (Level 3) | Construction Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	96,915	94,231
Significant Unobservable Inputs (Level 3) | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	361,177	358,897
Significant Unobservable Inputs (Level 3) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	37,776	38,588
Significant Unobservable Inputs (Level 3) | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	2,522	2,161
Significant Unobservable Inputs (Level 3) | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	20,801	86,306
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	35,803	37,885
Interest bearing deposits in banks	15,183	16,428
Investment securities	268,915	251,531
Loans held for sale	3,145	1,178
Accrued interest receivable	3,801	4,163
Nonmarketable equity securities	5,694	2,816
Deposits
Noninterest bearing	238,636	286,145
Interest bearing	633,019	762,722
Time	252,031	153,045
Borrowed funds
Short-term borrowed funds	25,200	50,000
Long-term	95,349
Subordinated notes	16,222	16,205
Accrued interest payable	977	354
Carrying Amount | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	379,023	350,507
Carrying Amount | Construction Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	98,981	95,723
Carrying Amount | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	386,655	373,990
Carrying Amount | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	40,967	40,729
Carrying Amount | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	2,571	2,197
Carrying Amount | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	22,115	88,008
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	35,803	37,885
Interest bearing deposits in banks	15,183	16,428
Investment securities	268,915	251,531
Loans held for sale	3,192	1,202
Accrued interest receivable	3,801	4,163
Deposits
Noninterest bearing	238,636	286,145
Interest bearing	633,019	762,722
Time	248,386	149,166
Borrowed funds
Short-term borrowed funds	25,114	49,997
Long-term	95,028
Subordinated notes	13,951	14,037
Accrued interest payable	977	354
Estimated Fair Value | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	343,012	319,066
Estimated Fair Value | Construction Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	96,915	94,231
Estimated Fair Value | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	361,177	358,897
Estimated Fair Value | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	37,776	38,588
Estimated Fair Value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	2,522	2,161
Estimated Fair Value | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	$ 20,801	$ 86,306