Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,390,682	$ 21,404,170
Accumulated Amortization	18,524,782	16,372,575
Net	$ 2,865,900	$ 5,031,595
Customer relationships [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Gross Carrying Amount	$ 12,720,000	$ 12,720,000
Accumulated Amortization	$ 12,720,000	11,342,000
Net		$ 1,378,000
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 6,242,055	$ 6,242,055
Accumulated Amortization	4,637,624	3,969,576
Net	$ 1,604,431	$ 2,272,479
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 230,683	$ 230,683
Accumulated Amortization	$ 230,683	$ 230,683
Software [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 1,890,791	$ 1,904,279
Accumulated Amortization	631,822	548,163
Net	$ 1,258,969	$ 1,356,116
Customer lists [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Gross Carrying Amount	$ 307,153	$ 307,153
Accumulated Amortization	304,653	282,153
Net	$ 2,500	$ 25,000