Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Nonqualified retirement plan	$ 0	$ 0	$ (7,229)
Intangible asset amortization	172,816	0	0
Deferred gain on covered transaction	9,352	498	(24,154)
Nonaccrual loan interest	(6,896)	32,157	(34,104)
Foreclosed assets expenses	(42,075)	(3,413)	(4,577)
Bad debt expense in excess of tax	423,203	(31,405)	27,850
Realized impairment gain on equity securities	0	0	13,233
Accretion of discounted bonds	14,772	33,187	26,370
Gain on disposition of discounted bonds	(28,215)	(23,059)	(3,503)
Book and tax depreciation difference	(24,959)	(18,719)	(67,265)
Total deferred taxes	$ 517,998	$ (10,754)	$ (73,379)