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Liquidity (Details Textual) - USD ($)	1 Months Ended
	May 30, 2020	Apr. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Liquidity (Textual)
Cash and cash equivalents			$ 2,323,599	$ 13,010,356	$ 16,112,907	$ 1,625,671
Cash backlog			$ 21,000,000
Net proceeds of offering	$ 15,596,141	$ 1,522,339

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of current assets classified as other.

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Amount of cash inflow from the issuance of equity classified as other.

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