Inventory - Additional Information (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Reserve for shrinkage and excess inventory	$ 39,403	$ 62,142
Net change in inventory valuation reserves	22,739	208,165
Provision for excess inventory	$ 83,218	$ 366,963

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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