Payment of sales commission.

No definition available.

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- Definition

Percentage of outstanding common stock limit for shareholder approval.

+ References

No definition available.

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- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

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No definition available.

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- Definition

Number of shares can be issued based upon outstanding percentage.

+ References

No definition available.

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- Definition

Common stock issued for commitment fee.

+ References

No definition available.

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- Definition

Aggregate purchase of common stock.

+ References

No definition available.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor.

+ References

No definition available.

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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- Definition

Number of new stock issued during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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Common Stock (Details Narrative) - USD ($)				3 Months Ended
Common Stock (Details Narrative) - USD ($)	Oct. 24, 2019	Apr. 08, 2019	Jan. 07, 2019	Jul. 31, 2020
Aggregate offering price		$ 15,700,000
Number of common stock shares sold		1,542,000
Pre-funded Warrants [Member]
Warrant to purchase shares common stock		3,385,680
Over-Allotment Option [Member]
Number of common stock shares sold		642,000
2019 ATM Facility [Member] \| A.G.P./ Alliance Global Partners [Member]
Aggregate offering price			$ 25,000,000
Number of common stock shares sold				5,913,362
Proceeds from issuance or sale of equity, net of issuance costs				$ 5,000,000
Combined purchase price per share				$ 0.85
Payment of sales commission				$ 162,448
Securities Purchase Agreement [Member]
Warrant to purchase shares common stock		4,927,680
Stock Purchase Agreement [Member] \| Aspire Capital Fund, LLC [Member]
Number of common stock shares sold				6,424,205
Proceeds from issuance or sale of equity, net of issuance costs				$ 4,000,000
Combined purchase price per share				$ 0.63
Aggregate purchase of common stock	$ 10,000,000
Percentage of outstanding common stock limit for shareholder approval	19.99%
Stock Purchase Agreement [Member] \| Aspire Capital Fund, LLC [Member] \| December 20, 2019 [Member]
Stock issued for new issue, shares	5,400,000
Stock Purchase Agreement [Member] \| Aspire Capital Fund, LLC [Member] \| Maximum [Member]
Percentage of outstanding common stock limit for shareholder approval	19.99%
Number of shares can be issued based upon outstanding percentage	1,219,010
Common stock issued for commitment fee	194,805