Valuation and Qualifying Accounts Allowance for Returns and Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Period	$ 354,542	$ 260,676
Charges (Benefits) to Revenue	(23,080)	141,234
(Increases) Deductions	169,350	47,368
Balance at End of Period	$ 162,112	$ 354,542