Fair Value of Financial Instruments - Estimated Fair Value and Related Carrying or Notional Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets:
Investment securities available-for-sale	$ 117,560	$ 84,993
Investment securities held-to-maturity	3,992	6,559
Reported Value Measurement
Assets:
Cash and cash equivalents	75,260	94,415
Investment securities available-for-sale	117,560	84,993
Investment securities held-to-maturity	3,907	6,429
Federal funds sold	82	85
Federal Home Loan Bank stock	870	1,135
Loans, net of allowance for loan and lease losses	696,972	638,374
Liabilities:
Deposits	846,842	782,212
Short-term borrowings	10,037	10,017
Other liabilities - derivatives	1,513	2,610
Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	75,260	94,415
Investment securities available-for-sale	117,560	84,993
Investment securities held-to-maturity	3,992	6,559
Federal funds sold	82	85
Federal Home Loan Bank stock	870	1,135
Loans, net of allowance for loan and lease losses	698,987	650,107
Liabilities:
Deposits	847,002	784,574
Short-term borrowings	10,037	10,017
Other liabilities - derivatives	1,513	2,610
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 1 [Member]
Assets:
Cash and cash equivalents	75,260	94,415
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 1 [Member]
Assets:
Investment securities available-for-sale	117,560	84,993
Investment securities held-to-maturity	3,992	6,559
Federal funds sold	82	85
Liabilities:
Deposits	847,002	784,574
Short-term borrowings	10,037	10,017
Other liabilities - derivatives	1,513	2,610
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 3 [Member]
Assets:
Federal Home Loan Bank stock	870	1,135
Loans, net of allowance for loan and lease losses	$ 698,987	$ 650,107

Fair value portion of federal funds sold.

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- Definition

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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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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