Property, Plant and Equipment (Summary of Original Cost of Property, Plant and Equipment) (Details) - USD ($)	Jun. 30, 2015	Jun. 30, 2014
Property, plant and equipment, gross	$ 12,964,883	$ 12,803,654
Accumulated depreciation	(10,466,020)	(10,124,753)
Property, plant and equipment, net	2,498,863	2,678,901
Land [Member]
Property, plant and equipment, gross	45,000	45,000
Buildings and improvements [Member]
Property, plant and equipment, gross	4,252,354	4,256,890
Machinery and equipment [Member]
Property, plant and equipment, gross	8,506,662	8,340,897
Furniture and fixtures [Member]
Property, plant and equipment, gross	$ 160,867	$ 160,867