Note 6 - Convertible Senior Notes - Schedule of Debt Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Total	$ 3,142	$ 3,258
Convertible Senior Notes 2023 [Member]
Contractual interest expense	2,834	2,954
Amortization of debt issuance costs	$ 308	304
Total		$ 1,500

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

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