Amortized cost, fair value and tax equivalent yield of securities, by maturity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
U S Treasury [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 10,799
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 9,838
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.29%
U S Treasury 2 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 8,484
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 7,295
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.17%
U S Treasury Total [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 19,283
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 17,133
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.24%
U S Government Agency Notes [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 6,962
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 6,070
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.00%
U S Government Agency Notes 2 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 8,958
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 7,552
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.42%
U S Government Agency Notes Total [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 15,920
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 13,622
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.23%
US States and Political Subdivisions Debt Securities [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 510
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 455
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.74%
U S States And Political Subdivisions 2 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 15,283
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 12,407
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.31%
U S States And Political Subdivisions 3 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 12,823
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 10,933
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.53%
U S States And Political Subdivisions 4 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 26,563
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 22,743
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.84%
U S States And Political Subdivisions Total [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 55,179
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 46,538
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.61%
Mortgage Backed Securities Collateralized Mortgage Obligations [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 109,012
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 97,343
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.64%
Mortgage Backed Securities Collateralized Mortgage Obligations Total [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 109,012
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 97,343
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.64%
Corporate Debt Securities 2 [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 14,250
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 12,774
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.46%
Corporate Debt Securities Total [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 14,250
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 12,774
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.46%
Available-for-Sale Securities [Member]
Summary of Investment Holdings [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 213,644
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 187,410
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.65%