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Valuation and Qualifying Accounts Allowance for Returns and Doubtful Accounts (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at Beginning of Period $ 162,112 $ 354,542
Charges (Benefits) to Revenue 148,624 (23,080)
(Increases) Deductions 94,583 169,350
Balance at End of Period $ 216,153 $ 162,112