Capital stock shares authorized.

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Amount of cash inflow from State of Texas Emerging Technology Fund award.

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The amount of research and development assets classified as current.

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Amount of State of Texas Emerging Technology Fund award.

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Amount of 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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The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Note 2 - Summary of Significant Accounting Policies (Details Textual)	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2018	Dec. 31, 2013 USD ($)	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Apr. 03, 2018 $ / shares shares	Mar. 31, 2018 $ / shares shares
Stockholders' Equity Note, Stock Split, Conversion Ratio	6.6841954
Capital Stock, Shares Authorized \| shares											210,000,000
Common Stock, Shares Authorized \| shares			200,000,000		200,000,000		200,000,000			200,000,000	200,000,000
Common Stock, Par or Stated Value Per Share \| $ / shares			$ 0.001		$ 0.001		$ 0.001			$ 0.001	$ 0.001
Preferred Stock, Shares Authorized \| shares			10,000,000		10,000,000		10,000,000			10,000,000	10,000,000
Preferred Stock, Par or Stated Value Per Share \| $ / shares			$ 0.001		$ 0.001		$ 0.001			$ 0.001	$ 0.001
Preferred Stock, Shares Outstanding, Ending Balance \| shares			0		0		0
Cash Equivalents, at Carrying Value, Total			$ 0		$ 0
Cash, Uninsured Amount			2,366,206		2,366,206		$ 8,465,768
Research and Development Assets, Current			801,780		801,780		0
State of Texas Emerging Technology Fund Award Amount									$ 4,500,000
Proceeds from State of Texas Emerging Technology Fund Award								$ 2,250,000	2,250,000
Revenues, Total
Fair Value Adjustment of Warrants		$ 2,500,000			0
Impairment of Long-Lived Assets Held-for-use					$ 0		$ 0
Grant [Member] \| U.S. Treasury Department [Member]
Revenues, Total									$ 244,500
Minimum [Member]
Property, Plant and Equipment, Useful Life					3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life					5 years