Note 6 - Stockholders' Equity - Schedule of Compensation Cost Related to Unvested Awards (Details) $ in Thousands	9 Months Ended
Sep. 30, 2023 USD ($)
Share-Based Payment Arrangement, Option [Member]
Unrecognized compensation cost	$ 5,063
Expected weighted-average period in years of compensation cost to be recognized (Year)	2 years 8 months 12 days
Restricted Stock [Member]
Unrecognized compensation cost	$ 36,978
Expected weighted-average period in years of compensation cost to be recognized (Year)	2 years 9 months 18 days

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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