Note 6 - Convertible Senior Notes - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Total		$ 2,785
March 2023 Note [Member] \| Convertible Senior Notes [Member]
Contractual interest expense	$ 3,019
Amortization of issuance costs	514
Total	$ 3,533

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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