Goodwill and Other Intangible Assets (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 4,150,339		$ 4,150,339		$ 4,150,339
Other intangible assets:
Gross carrying amount	3,932,976		3,932,976		3,891,241
Accumulated amortization	(3,847,230)		(3,847,230)		(3,799,907)
Net carrying amount	85,746		85,746		$ 91,334
Amortization of intangible assets	$ 22,740	$ 36,541	$ 47,324	$ 70,820