Common stock, authorized offering amount under agreement to sell.

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- Definition

Equity financing and warrants.

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No definition available.

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- Definition

The cash inflow associated with the amount received from entity's raising of capital, net of related financing costs.

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No definition available.

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- Definition

Selling commission per additional shares sold percentage.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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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

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- Definition

Number of warrants or rights outstanding.

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

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Equity Financings and Warrants (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	12 Months Ended
	Jun. 03, 2020	Feb. 22, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 22, 2020	Jul. 14, 2020	Jan. 11, 2017
Equity Financing And Warrants [Line Items]
Net proceeds from issuance of common stock			$ 50,894	$ 7,281
Common stock, par value			$ 0.001	$ 0.001
Common stock, shares issued			9,548,150	1,594,070
JonesTrading
Equity Financing And Warrants [Line Items]
Percentage of selling commission per additional shares sold							3.00%
Sales Agreement
Equity Financing And Warrants [Line Items]
Common stock, shares issued			2,214,301	820,561
Net proceeds from issuance of common stock			$ 14,400	$ 6,900
Sales Agreement \| JonesTrading
Equity Financing And Warrants [Line Items]
Common stock, par value							$ 0.001
Aggregate offering price of common stock authorized						$ 32,400	$ 7,300
2020 Sales Agreement
Equity Financing And Warrants [Line Items]
Net proceeds from issuance of common stock			$ 28,900
Aggregate offering price of common stock authorized					$ 54,000
Sale of common stock			5,066,279
2020 Sales Agreement \| Subsequent Event
Equity Financing And Warrants [Line Items]
Net proceeds from issuance of common stock		$ 23,300
Sale of common stock		4,861,993
Direct Offering
Equity Financing And Warrants [Line Items]
Common stock issued	348,000		348,000
Purchase price per share	$ 9.00		$ 9.00
Pre-funded warrants to purchase shares of common stock	325,500		325,500
Purchase price per warrant	$ 8.999		$ 8.999
Pre-funded warrants outstanding	0		0
Net proceeds from issuance of common stock	$ 5,300		$ 5,300
Percentage of selling commission per additional shares sold	8.00%		8.00%