Fair Value Measurements - Estimated Fair Values of Company's Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets
Cash and cash equivalents	$ 97,051	$ 51,592
Loans, net of allowance	445,227	438,378
Federal Home Loan Bank stock	4,097	4,177
Accrued interest receivable	2,581	2,901
Financial liabilities
Deposits	608,022	579,535
Short term borrowings	27,180	12,705
Subordinated debentures	23,619	23,604
Interest payable	549	224
Fair Value, Inputs, Level 1
Financial assets
Cash and cash equivalents	97,051	51,592
Loans, net of allowance	0	0
Federal Home Loan Bank stock	0	0
Accrued interest receivable	0	0
Financial liabilities
Deposits	0	0
Short term borrowings	0	0
Subordinated debentures	0	0
Interest payable	0	0
Fair Value, Inputs, Level 2
Financial assets
Cash and cash equivalents	0	0
Loans, net of allowance	0	0
Federal Home Loan Bank stock	4,097	4,177
Accrued interest receivable	2,581	2,901
Financial liabilities
Deposits	608,434	580,130
Short term borrowings	27,180	12,705
Subordinated debentures	21,246	21,989
Interest payable	549	224
Fair Value, Inputs, Level 3
Financial assets
Cash and cash equivalents	0	0
Loans, net of allowance	443,931	436,893
Federal Home Loan Bank stock	0	0
Accrued interest receivable	0	0
Financial liabilities
Deposits	0	0
Short term borrowings	0	0
Subordinated debentures	0	0
Interest payable	$ 0	$ 0

Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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