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Note 12 - Convertible Senior Notes - Schedule of Interest Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Amortization of debt issuance costs $ 315 $ 306
The 2024 Notes and 2026 Notes [Member]    
Contractual interest expense 1,059 1,006
Amortization of debt issuance costs 350 204
Total interest cost $ 1,408 $ 1,210
Effective interest rate 5.30% 5.10%