Federal Taxes on Income - Summary of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current	$ 1,764	$ 1,927
Deferred	313	(352)
Total provision (benefit) for income taxes	$ 2,077	$ 1,575

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration