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Allowance for Doubtful Accounts (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Balance at the beginning of the year $ 23,000 $ 17,200
Provision for bad debts 63,000 6,557
Charge-offs (2,211) (874)
Recoveries 0 117
Balance at the end of the year $ 83,789 $ 23,000