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Property, Plant and Equipment (Detail Textuals)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 09, 2017
USD ($)
Aug. 17, 2017
USD ($)
Piece
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Property, Plant and Equipment [Line Items]              
Sell unused commercial real property in Franklinville, New York $ 180,000            
Pieces of equipment | Piece   2          
Amount paid to purchased equipment   $ 688,000          
Depreciation and amortization expense     $ 209,000 $ 198,000 $ 637,000 $ 610,000  
Advanced Technology Group ("ATG")              
Property, Plant and Equipment [Line Items]              
Construction in progress     $ 1,544,000   $ 1,544,000   $ 77,000