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Fair Value of Financial Instruments - Estimated Fair Value and Related Carrying or Notional Amounts of Financial Instruments (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Assets:
Investment securities available-for-sale	$ 127,007,000	$ 130,795,000
Investment securities held-to-maturity	1,599,000	1,769,000
Liabilities:
Other liabilities - derivatives	0
Carrying Amount [Member]
Assets:
Cash and cash equivalents	68,427,000	30,152,000
Investment securities available-for-sale	127,007,000	130,795,000
Investment securities held-to-maturity	1,682,000	1,862,000
Federal funds sold	263,000	1,768,000
Federal Home Loan Bank stock	1,590,000	1,359,000
Loans, net of allowance for credit losses/loan and lease losses	764,290,000	764,451,000
Liabilities:
Deposits	897,885,000	870,025,000
Short-term borrowings	25,000,000	20,038,000
Long-term borrowings	10,744,000	10,726,000
Other liabilities - derivatives		2,306,000
Estimate of Fair Value Measurement [Member]
Assets:
Cash and cash equivalents	68,427,000	30,152,000
Investment securities available-for-sale	127,007,000	130,795,000
Investment securities held-to-maturity	1,599,000	1,769,000
Federal funds sold	263,000	1,768,000
Federal Home Loan Bank stock	1,590,000	1,359,000
Loans, net of allowance for credit losses/loan and lease losses	733,467,000	730,961,000
Liabilities:
Deposits	826,524,000	788,161,000
Short-term borrowings	25,000,000	20,038,000
Long-term borrowings	9,885,000	9,702,000
Other liabilities - derivatives		2,306,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Cash and cash equivalents	68,427,000	30,152,000
Investment securities available-for-sale	53,468,000	52,882,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Investment securities available-for-sale	73,539,000	76,913,000
Investment securities held-to-maturity	1,599,000	1,769,000
Federal funds sold	263,000	1,768,000
Liabilities:
Deposits	826,524,000	788,161,000
Short-term borrowings	25,000,000	20,038,000
Long-term borrowings	9,885,000	9,702,000
Other liabilities - derivatives		2,306,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Investment securities available-for-sale		1,000,000
Federal Home Loan Bank stock	1,590,000	1,359,000
Loans, net of allowance for credit losses/loan and lease losses	$ 733,467,000	$ 730,961,000

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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