Note 8 - Preferred Stock and Common Stock Warrants - Allocation of Net Cash Proceeds (Details) $ in Thousands	1 Months Ended
Mar. 31, 2021 USD ($)
Series B Warrants [Member]
Net proceeds - Initial Fair Value Allocation	$ 1,631
Per balance sheet upon issuance	1,631
Convertible Preferred Stock [Member]
Gross proceeds	39,500
Equity issuance costs	(61)
Net proceeds - Initial Fair Value Allocation	39,439
Series B Convertible Preferred Stock [Member]
Net proceeds - Initial Fair Value Allocation	37,808
Per balance sheet upon issuance	$ 37,808

The amount of cash inflow from issuance of convertible preferred stock and common stock warrants after deducting issuance costs and after beneficial conversion feature allocation.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The cash inflow from issuance of convertible preferred stock and common stock warrants after deducting issuance costs.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

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