Securities - Schedule of Other Investments (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
FHLB stock	$ 4,581,700	$ 4,096,500
PCBB stock	190,000	190,000
Mutual fund - CRA qualified	2,449,180
Total other investments	$ 7,220,880	$ 4,286,500