Amortized cost, fair value and tax equivalent yield of securities, by maturity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
U S Treasury [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 1,976
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 1,904
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.53%
U S Treasury 2 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 8,854
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 8,003
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.24%
U S Treasury 3 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 8,485
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 7,338
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.17%
U S Treasury Total [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 19,315
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 17,245
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.24%
U S Government Agency Notes [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 8,951
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 7,864
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.25%
U S Government Agency Notes 2 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 6,978
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 5,966
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.43%
U S Government Agency Notes Total [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 15,929
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 13,830
Receivable with Imputed Interest, Effective Yield (Interest Rate)	1.33%
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 1,486
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 1,343
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.11%
U S States And Political Subdivisions 2 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 15,331
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 12,827
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.25%
U S States And Political Subdivisions 3 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 14,589
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 12,491
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.39%
U S States And Political Subdivisions 4 [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 19,631
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 17,010
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.42%
U S States And Political Subdivisions Total [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 51,037
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 43,662
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.35%
Mortgage Backed Securities Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 102,295
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 90,580
Receivable with Imputed Interest, Effective Yield (Interest Rate)	3.05%
Mortgage Backed Securities Collateralized Mortgage Obligations Total [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 102,295
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 90,580
Receivable with Imputed Interest, Effective Yield (Interest Rate)	3.05%
Corporate Debt Securities 2 [Member]
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	$ 12,160
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.46%
Corporate Debt Securities Total [Member]
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	$ 12,160
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.46%
Available-for-Sale Securities [Member]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	$ 202,826
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value	$ 177,477
Receivable with Imputed Interest, Effective Yield (Interest Rate)	2.82%