Employee Benefits and Retirement Plans - Amounts Recognized in Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Net loss (gain)	$ (1,248,748)	$ 40,601	$ (503,167)
Prior service costs	0	0	0
Total recognized in other comprehensive income (loss)	(1,248,748)	40,601	(503,167)
Net periodic pension cost	573,419	418,789	583,427
Partial recognition of loss due to settlement	0	0	0
Total recognized in net periodic pension cost and other comprehensive income	$ (675,329)	$ 459,390	$ (80,260)