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Income Taxes - Schedule of Reconciliation Between Amount of Total Income Taxes and Amount Computed by Multiplying Income by Applicable Federal Income Tax Rates (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income taxes computed at the applicable federal income tax rate	$ 1,088	$ 1,201
Tax exempt municipal income	(74)	(89)
Income from life insurance	(196)	(42)
Nondeductible merger expenses	188
Nondeductible core deposit intangible amortization		65
Other, net	(33)	12
Income Tax Expense	$ 973	$ 1,147

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Income tax reconciliation income from life insurance.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible amortization.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.

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