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Acquisitions - Summary of Unaudited Pro Forma Information (Details) - Antenna Plus - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Business Acquisition [Line Items]    
Pro forma sales $ 13,305,098 $ 13,026,993
Pro forma income from operations (1,163,669) 927,532
Pro forma net income $ (1,105,791) $ 887,143