Taxes on Income (Effective Tax Rate Reconciliation) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Federal tax at statutory rate			$ 84,836	$ 21,761
Items affecting federal income tax rate:
State taxes on income, net of federal benefit			12,561	2,013
Tax-exempt income			(22,263)	(43,749)
Bank-owned life insurance			231	(22,809)
Valuation allowance			4,000	13,000
Other			13,634	(12,616)
Income tax expense (benefit)	$ (13,003)	$ (31,921)	$ 92,999	$ (42,400)