XML 55 R41.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant and Equipment (Summary of Original Cost of Property, Plant and Equipment) (Details) - USD ($)
Jun. 30, 2018
Jun. 30, 2017
Property, plant and equipment, gross $ 15,471,541 $ 13,548,321
Accumulated depreciation (11,712,904) (11,283,225)
Property, plant and equipment, net 3,758,637 2,265,096
Land [Member]    
Property, plant and equipment, gross 45,000 45,000
Buildings and improvements [Member]    
Property, plant and equipment, gross 4,378,866 4,304,366
Machinery and equipment [Member]    
Property, plant and equipment, gross 10,877,555 9,028,835
Furniture and fixtures [Member]    
Property, plant and equipment, gross $ 170,120 $ 170,120