Income Taxes - Reconciliation of Federal Statutory Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Statutory to Effective Tax Rates [Abstract]
Computed “expected” tax expense	$ 1,643	$ 1,445	$ 1,828
Impact of the Tax Cuts and Jobs Act			1,687
Changes in income taxes resulting from:
Tax-exempt interest income	(146)	(149)	(254)
Tax credits	(552)	(504)	(422)
Other	59	(46)	40
Provision for income taxes	$ 1,004	$ 746	$ 2,879

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to 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 increase (decrease) in the income tax rates.

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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 income (loss) exempt from income taxes.

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