Inventories (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Summary of inventories
Raw materials	$ 4,486,847	$ 3,872,752
Finished goods	7,153,199	5,926,525
Inventories, gross	11,640,046	9,799,277
Inventory reserves	(279,610)	(244,206)
Inventories, net	$ 11,360,436	$ 9,555,071

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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