The maximum aggregate offering price of the equity distribution agreement.

No definition available.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

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Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Note 7 - Common Stock (Details Textual) - USD ($)			3 Months Ended					9 Months Ended
Note 7 - Common Stock (Details Textual) - USD ($)	Feb. 12, 2021	Apr. 08, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Sep. 04, 2020
Stock Issued During Period, Value, New Issues			$ 732,000			$ 203,000	$ 4,922,000
Payments of Stock Issuance Costs									$ 78,000
Common Stock, Par or Stated Value Per Share (in dollars per share)			$ 0.0001					$ 0.0001		$ 0.0001	$ 0.0001
Private Placement [Member] \| Eshelman Ventures [Member]
Stock Issued During Period, Shares, New Issues (in shares)		931,098
Stock Issued During Period, Value, New Issues		$ 5,000,000.0
Payments of Stock Issuance Costs		$ 78,000
Direct Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,875,000
Stock Issued During Period, Value, New Issues	$ 20,900,000				$ 20,866,000
Shares Issued, Price Per Share (in dollars per share)	$ 7.29
At-the-market Offering [Member]
Stock Issued During Period, Value, New Issues				$ 1,816,000	$ 7,034,000
At-the-market Offering [Member] \| Piper Sandler & Co. and Cantor Fitzgerald & Co. [Member]
Stock Issued During Period, Shares, New Issues (in shares)			182,995					1,382,673
Stock Issued During Period, Value, New Issues			$ 700,000					$ 9,600,000
Equity Distribution Agreement, Maximum Aggregate Offering Price											$ 60,000,000