Fair Value Measurements - Summary of Carrying Values and Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets:
Available for sale securities	$ 68,135	$ 65,731
Loans	324,812	369,830
Accrued interest receivable	1,034	1,106
Federal Home Loan Bank stock	913	1,261
Cash value of life insurance	12,985	13,400
Financial liabilities:
Deposits	357,975	406,137
Advance payments by borrowers for taxes and insurance	12,070	1,240
Federal Home Loan Bank advances	7,633	30,010
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	10,356	7,923
Accrued interest receivable	1,034	1,106
Financial liabilities:
Deposits	208,372	223,860
Advance payments by borrowers for taxes and insurance	12,070	1,240
Accrued interest payable	419	372
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Available for sale securities	68,135	65,731
Loans held for sale	3,995	771
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans	326,887	362,233
Federal Home Loan Bank stock	913	1,261
Cash value of life insurance	12,985	13,400
Financial liabilities:
Deposits	156,447	180,703
Federal Home Loan Bank advances	8,085	29,499
Reported Value Measurement [Member]
Financial assets:
Cash and cash equivalents	10,356	7,923
Available for sale securities	68,135	65,731
Loans held for sale	3,995	771
Loans	324,812	369,830
Accrued interest receivable	1,034	1,106
Federal Home Loan Bank stock	913	1,261
Cash value of life insurance	12,985	13,400
Financial liabilities:
Deposits	357,975	406,137
Advance payments by borrowers for taxes and insurance	12,070	1,240
Federal Home Loan Bank advances	7,633	30,010
Accrued interest payable	$ 419	$ 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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No definition available.

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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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