Employee Benefits and Retirement Plans - Amounts Recognized in Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Net loss (gain)	$ 1,032,035	$ (55,700)	$ (191,451)
Prior service costs	0	0	0
Total recognized in other comprehensive income (loss)	1,032,035	(55,700)	(191,451)
Net periodic pension cost	235,151	266,073	301,718
Total recognized in net periodic pension cost and other comprehensive income (loss)	$ 1,267,186	$ 210,373	$ 110,267