Inventories (Details) - USD ($)	Jun. 30, 2020	Mar. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 9,381,816	$ 12,499,301
Work-in-progress	825,918	1,541,716
Finished goods	7,869,346	8,592,755
Total inventory	$ 18,077,080	$ 22,633,772

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

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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

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