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Balance Sheet Details - Property, Plant and Equipment (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Details    
Land and improvements $ 1,424,689 $ 1,281,982
Buildings and improvements 7,908,780 7,271,006
Machinery and equipment 32,559,468 32,020,937
Capitalized software and other 1,312,887 1,274,592
Less Accumulated depreciation (30,755,266) (30,150,074)
Property, Plant and Equipment, net $ 12,450,558 $ 11,698,443