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Note 4 - Fair Value Measurements - Fair Value of Warrant Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Warrant Liability [Member]
Fair value	$ 9,558	$ 0
Fair value	0	9,558
Warrant Liability [Member] | The November 2021 Warrants [Member]
Decrease in fair value	(2,056)	(4,614)
Reclassification of Warrants	(7,502)
Fair value of warrants issued in connection with the 2022 Warrant Reprice Transaction (see Note 14)		14,172
Warrant Liability [Member] | The 2022 Warrant Reprice Transaction [Member]
Decrease in fair value	(3,390)
Fair value of warrants issued in connection with the 2022 Warrant Reprice Transaction (see Note 14)	5,241
Warrant Liability [Member] | The September 2022 Warrants [Member]
Reclassification of Warrants	(1,851)
Contingent Earnout Liability [Member]
Fair value	561
Decrease in fair value	(561)
Fair value	$ 0	$ 561

X

- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ 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 (c)(1)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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X

- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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X

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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X

- Details

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X

- Details

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