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Selected Quarterly Financial Data - Schedule of Quarterly Financial Data (Details) (Parenthetical) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]          
Stock and option compensation $ 76,000 $ 68,000 $ 76,299 $ 67,531 $ 725,016
Bad debts   $ 480,563 $ 43,215 $ 480,563 $ 324,286