Retirement Agreements and Other Postretirement Benefit Plan Effects on Net Periodic Postretirement Benefit Cost and Accumulated Postretirement Benefit Obligation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
One-Percent Point Increase: Effect on the service cost component	$ 0
One-Percent Point Increase: Effect on interest cost	7,447
One-Percent Point Increase: Total effect on the net periodic postretirement benefit cost	7,447
One-Percent Point Decrease: Effect on the service cost component		$ 0
One-Percent Point Decrease: Effect on interest cost		(5,835)
One-Percent Point Decrease: Total effect on the net periodic postretirement benefit cost		(5,835)
One-Percent Point Increase: Effect on those currently receiving benefits (retirees and spouses)	0
One-Percent Point Increase: Effect on active fully eligible	186,181
One-Percent Point Increase: Effect on actives not yet eligible	0
One-Percent Point Increase: Total effect on the accumulated postretirement benefit obligation	$ 186,181
One-Percent Point Decrease: Effect on those currently receiving benefits (retirees and spouses)		0
One-Percent Point Decrease: Effect on active fully eligible		(145,871)
One-Percent Point Decrease: Effect on actives not yet eligible		0
One-Percent Point Decrease: Total effect on the accumulated postretirement benefit obligation		$ (145,871)