Fair Value - Summary of Carrying Values and Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial assets:
Available for sale securities	$ 71,375	$ 65,731
Loans	310,674	369,830
Accrued interest receivable	963	1,106
Cash value of life insurance	13,085	13,400
FHLB stock	913	1,261
Marketable equity securities	2,553
Trading securities		2,429
Financial liabilities:
Deposits	344,596	406,137
Advance payments by borrowers for taxes and insurance	1,681	1,240
FHLB advances	17,623	30,010
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	11,707	7,923
Accrued interest receivable	963	1,106
Marketable equity securities	2,553
Trading securities		2,429
Financial liabilities:
Deposits	202,180	223,860
Advance payments by borrowers for taxes and insurance	1,681	1,240
Accrued interest payable	385	372
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Available for sale securities	71,375	65,731
Loans held for sale	685	771
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans	310,993	362,233
Cash value of life insurance	13,085	13,400
FHLB stock	913	1,261
Financial liabilities:
Deposits	142,708	180,703
FHLB advances	17,976	29,499
Reported Value Measurement [Member]
Financial assets:
Cash and cash equivalents	11,707	7,923
Available for sale securities	71,375	65,731
Loans held for sale	685	771
Loans	310,674	369,830
Accrued interest receivable	963	1,106
Cash value of life insurance	13,085	13,400
FHLB stock	913	1,261
Marketable equity securities	2,553
Trading securities		2,429
Financial liabilities:
Deposits	344,596	406,137
Advance payments by borrowers for taxes and insurance	1,681	1,240
FHLB advances	17,623	30,010
Accrued interest payable	$ 385	$ 372

Accrued interest payable.

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Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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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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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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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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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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Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Amount of investment in marketable security.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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