Inventories (Detail) - USD ($)	3 Months Ended	12 Months Ended
Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventory Write-down	$ 1,895,884	$ 2,595,884	$ 0
Purchased components		720,209	1,767,674
Finished goods		443,505	1,094,190
Inventories		$ 1,163,714	$ 2,861,864

No definition available.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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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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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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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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