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Note 8 - Outstanding Warrants - Fair Value Assumptions (Details)	Dec. 31, 2022 $ / shares yr	Dec. 31, 2021 $ / shares yr
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0	0
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0.0175	0.0021
Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	1.5141	1.3616
Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input | yr	3	2
Measurement Input, Exercise Price [Member]
Warrants and Rights Outstanding, Measurement Input	10.47	0.01
Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input	11.29	9.92
Fair Value per Warrant on Grant Date [Member]
Warrants and Rights Outstanding, Measurement Input	9.68	9.91

X

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

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