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Property, Plant and Equipment (Details Textual) - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Property Plant and Equipment (Textual)      
Land and building held for sale $ 395,000   $ 395,000
Depreciation expense $ 3,369,000 $ 1,615,000