Goodwill and Other Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 4,150,339		$ 4,150,339		$ 4,150,339
Other intangible assets:
Gross carrying amount	3,879,547		3,879,547		3,816,402
Accumulated amortization	(3,774,172)		(3,774,172)		(3,674,771)
Net carrying amount	105,375		105,375		$ 141,631
Amortization of intangible assets	$ 28,581	$ 40,533	$ 99,401	$ 121,306