Securities Available For Sale - Summary of Gain (loss) on Securities Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 1,749,034	$ 2,287,454	$ 208,200
Gross realized losses	(1,506)	(2,153)	(3,970)
Total Realized Gain on Sales of Securities, net	$ 1,747,528	$ 2,285,301	$ 204,230