Employee Benefit Plans - Schedule of Options Exercised (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Employee Benefits and Share-based Compensation, Noncash [Abstract]
Number of options exercised (shares)	23,366	18,480	100,973	65,162
Total intrinsic value of options exercised	$ 462,533	$ 201,134	$ 1,699,924	$ 686,054
Cash received from options exercised	108,156	89,536	500,114	360,327
Tax deduction realized from options	$ 130,018	$ 82,163	$ 477,849	$ 280,253