Common Stock (Details) - USD ($)		3 Months Ended	9 Months Ended
	Oct. 08, 2021	Feb. 28, 2022	Feb. 28, 2022	May 31, 2021
Common Stock (Details) [Line Items]
Common stock authorizes		12,500,000	12,500,000	12,500,000
Common stock par value per share		$ 0.01	$ 0.01	$ 0.01
Common stock, description	The $4,167,000 of common stock that may be offered, issued and sold under the sales agreement prospectus is included in the $5,000,000 of shares of common stock that may be offered, issued and sold by the Company under the base prospectus. Upon termination of the sales agreement, any portion of the $4,167,000 included in the sales agreement prospectus that is not sold pursuant to the sales agreement will be available for sale in other offerings pursuant to the base prospectus and if no shares are sold under the agreement, the full $4,167,000 of securities may be sold in other offerings pursuant to the base prospectus. Under the 2021 ATM, we pay the 2021 Agent a commission rate equal to 3.0% of the gross sales price per share of all shares sold through the 2021 Agent under the sales agreement.
Common stock pursuant		142,500	142,500
Gross proceeds			$ 1,965,623
selling price of per share		$ 13.79	$ 13.79
Net proceeds			$ 1,821,090
Commissions and other transactions costs			$ 144,533
Common stock [Member]
Common Stock (Details) [Line Items]
Common stock authorizes		12,500,000	12,500,000
Common stock par value per share		$ 0.01	$ 0.01
Common stock, description	(i) a base prospectus, which covers the offering, issuance and sale by the Company of up to $5,000,000 in the aggregate of shares of common stock from time to time in one or more offerings; and (ii) a sales agreement prospectus, which covers the offering, issuance and sale by the Company of up to $4,167,000 in the aggregate of shares of common stock that may be issued and sold from time to time under an at-the-market sales agreement (the “2021 ATM”) by and between the Company and A.G.P./Alliance Global Partners, as sales agent (the “2021 Agent”).