Property, Plant and Equipment - Summary of Property, Plant and Equipment Balances (Detail) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 12,482,985	$ 12,477,050
Less accumulated depreciation	(7,532,625)	(7,259,121)
Property, plant and equipment, net	4,950,360	5,217,929
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	3,608,588	3,608,588
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	8,536,138	8,530,203
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 338,259	$ 338,259