Note 12 - Convertible Senior Notes - Schedule of Interest Expense (Details) - The 5% Convertible Senior Notes Due 2024 [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Contractual interest expense	$ 46	$ 1,056	$ 92	$ 2,111
Amortization of debt issuance costs	350	359	701	709
Total interest cost	$ 396	$ 1,415	$ 793	$ 2,820
Effective interest rate	1.00%	5.30%	1.00%	5.30%